Show HN: Hacker News client with a twist
haxplore.pabue.co
haxplore.pabue.co
- Intuitive keyboard control
- Link detection in comments with hotkeys to open them directly
- Better readbility and formatting of comments
- Hotkeys for the most common actions
- Ability to open stories or comments in an overlay for reading long texts
very addicting
Other than that, it's a very cool UI! I can see using it full-time and press O only when I want to reply. Actually, I just did :D
Wow, thank you very much! :D
But then I realized, this would break the subtle cohesion of the current model. Everyone has to specifically come back to news.yc to comment. Everyone has to use the HN design. I do wonder if this is intentional, or at least strategic - because the current approach enforces a certain perspective when commenting that *perhaps* might be broken, or at least made much much harder to maintain, by the fragmentation induced from being able to run off and build totally alternative interfaces.
It's just a thought. I'm not sure if this is just hot air.
Looking at reddit, whenever someone complains about degredation of discussion, somebody pops up and says "just use old.reddit.com". However, everyone else is still on new reddit, so even if you increase the quality of your submissions, the overall quality still drops.
And it truly is. There's something this honestly nails.
But after using it for few moments, I was able to crystallize what I perceived was "wrong" with the design: the mechanic of combining locality with spatiality means I completely lose sight of the bigger picture. I have a really bad memory and attention span, so I depend on constantly reading cues/senses of scale from my environment. As in, they need to be constantly there. (For example, the first thing I'd do if I ever used a Mac was make the scrollbars permanently visible.)
With this UI, the immediate and global focus (the only focus) is on the comment I'm reading right now. Paradoxically, the clear intuition is that this would reduce distraction and increase focus, but (at least for me) by only presenting individual details I cannot establish and maintain orientation about how big a thread is, the structure of it (a few large mega-subthreads, or subthread islands, or hundreds of upvotes but only like 15 total comments), etc.
I tend to take full advantage of scroooooling through and cherry-picking comments to read at random. I've long dreamed of solutions that provide a rigid framework that ensure I read every comment, but I've kind of accepted that such approaches just don't work in practice; they require a tremendous amount of discipline to use (almost like grammar-proofreading a book).
A UI that has me consider every single comment as globally important ("it's the only thing on the screen at this exact moment"), both a) maxes out my attention span very quickly and b) feeds me a non-representative, breadth-first view of the discussion, because I find there's a nontrivial effort associated with needing to hit the right arrow key to expand the comments: I Have No Idea How Many Subcomments Are Hiding In There nO I aM NoT GoInG iN ThErE ThAt iS ScArY. For whatever reason (???) it's physiologically easier to just keep hitting Down instead.
This is honestly novel and interesting - and because of how well-executed this is, I can say that if you were to ever to consider tackling global orientation (I'm imagining spotlight/expose type zooming here, but I strongly suspect that would be just as disorientating as not being able to vaguely internalize the bigger picture at all), I would be very interested to see.
However, it doesn't fit how I read HN or Reddit - I tend to scan and be drawn to keywords and visually interesting parts of the thread. This type of UI turns the comments into a TODO list of indeterminate length.
I use a tiling WM, so I can have this open in a window (or scratchpad) that is shrunk to the width of your column, and just shoot over to it, and move around nice and easily!
Two things:
- alt + h doesn't open the Help for me, it opens the actual help menu in Firefox.
- It would be nice to mark the entries as 'read' and show if more comments have happened since reading
Edit: Wrapping it in a small Tauri app would be cool, then it gets rid of the bookmarks and stuff I have at the top :D
1. The alt+h hotkey will be probably be replaced by "?". That should fix this.
2.1 That's a pretty cool idea. Would you want the "mark as read" part to happen automatically or manually?
2.2 Showing new/unread comments is also a cool idea but it will increase the amount of requests to the HN api. However I'm gonna look into it.
Wrapping it in a Tauri might be cool, because I actually wanted to try that. But I think the first step would be to make it a PWA, so you can install it without downloading anything.
Thank you for the feeback!
At the simplest level LocalStorage or equivalent keyed on the submission id with a prior comment count to be compared with the new comment count would be sufficient. If it had a time of hast check as well, highlighting new comments would also be easy.
I'm not sure about other people, but thise are really the two things I care about most when trying to keep up with a discussion (are there new comments, and which are they).
I use live bookmarks in Firefox, so I have a tick next to the items I have looked at, just something like that, or some sort of visual indication.
The comment count thing was more a thing I like on other sites, so like on ArsTech I can see if there are more comments from where I last read (which is handy to go and see if there are more cool discussions going on) but yea maybe would hammer the API a bit too much - unless limited to just 'new 'or 'ask' or something
PS : Please use another color scheme or put a dark mode somehow, my wife will kill me if I open the app at night.
Oh, and I just addeda dark theme. Just to keep you alive. ;) It should be applied automatically, but you can also change it in the settings.
My $0.02:
I wish this looked more like hacker news: IE, same colors, same fonts, same text size. I've been using Hacker News for so long that its look and feel are part of its queues. Different colors / fonts just gives the same content a different feel.
I'm torn on how you display comments. One thing that I don't like in Hacker News is that a top-level comment with a lot of replies ends up pushing other top-level comments too far in the page. Your approach, though, is the polar opposite: Never show replies until I select a comment and push ->. Perhaps show a few of the replies with smaller text?
Many HN apps and browser extension by now have an easy way to to collapse comments (usually by clicking an icon next to the comment or tapping on the comment on touchscreens), but I don't think I've seen one yet where collapsed by default is an option.
P.S. And now that I am thinking more about it, apps and extensions (at least the ones i've used so far) don't even have the true "collapsing" function (or maybe I just wasn't aware of where it is buried in the settings, so please let me know if I am wrong here).
When you try to collapse on Refined HN (ff/chrome extension) or HACK (iOS app), it doesn't hide all child comments and then keeps the root comment (just listed those two extensions/apps as an example, because those are the two I personally use). It hides the content of all comments including the root comment that you clicked, but it leaves a small indicator that there is a collapsed comment, basically just the username and the number of comments.
To this point, I have a question to everyone. If there is an HN app for iOS that anyone can genuinely recommend that has a feature when you collapse a comment, it still shows the one you clicked "collapse" on but hides all child comments (as opposed to the text content of the root comment you collapsed being hidden as well), please post them.
It has collapsed comments by default and works well on mobile and decent on desktop.
Showing a few replies would be possible, but I think it would clutter the interface and make the thing a bit more confusing. In my opinion showing the amount of replies should be enough, but I will keep this in mind.
One tiny thing (though everyone's tiny suggestions sure add up :D ) (aside from the alt-h not working in firefox)...
It would be awesome if hitting space or something on a selected post would open it in a iframe (or panel) in the middle of the screen.
Then be able to up-arrow/down-array (or PGUP/PGDOWN) through the page and escape out of it.
This would mean you can quickly skim an article without leaving the app!
But, well done, it's absolutely wicked :D
(i.e. you closed this tab, redirect user to previous tab), so wouldn't work if I starting viewing a HN post, then continued work (that I should have been originally doing) then go back to the post, close it and then browser redirects me back to the 'work' tab that I came back from..... if you see what I mean.
Tab history: * Expected: HN client -> website from post -(ctrl+w)-> HN client vs: * HN Client -> HN post website -(switch tab)-> real work work tab -(switch back)-> HN post website -(ctrl+w)-> real work tab :(
)*
*Think I opened a bracket somewhere in the comment and haven't closed it
That really is a great idea. One issue might be that not every site allows being shown in an iframe because they block that functionality. But I'm gonna look into it!
Yeh, I could maybe image a 'p' button that would show a preview, that would just be hit-and-miss... I wonder what percentage of submissions on hacker news actively disallow iframes... like actual blog posts and not things like 'new apple product' from Apple's website :wondering:
Currently ..clicking on right arrow always shows the "loading" animation for 0.5-1 sec.
Instead, if we readily show the top comment instantly and then lazy-load the rest, it will drastically improve the UX. User will perceive near zero wait time that way. My 2 cents
If you are interested you can always take a look at the changelog: https://haxplore.sleekplan.app/changelog
Personally I am a fan of scanning over threads on https://hckrnews.com/ , filtering by "Top 20" or "50%", and opening interesting ones in a new tab. It especially helps to only go through the titles I haven't seen yet.
Can you expand on that? What were your references when choosing these key commands? Everything else I use chose `?` as the help key. My macbook doesn't even _have_ an `ALT` key...
I just have two suggestions. Add a dark theme and options to show only top 10/top 20/all just like hckrnews.com which helps to keep track of things and not miss important stories on busy days.
Feature request: Ability to open an HN URL in Haxplore.
- Why is the Comments count shown only for the highlighted story?
- On Firefox Windows, pressing the Enter key on an item triggers a popup warning at the top of the page. Took me a few tries to notice what was going on.
- Alt + H triggers the Firefox Help menu for me :| Can you change that shortcut key to "?" instead? GMail, Github etc use "?".
- The green background for the comment text is a bit too dark.
- Is it just me or is the comment text not showing paragraph breaks?
- The zoom in transition when the comment text modal shows up just slows things down. If I'm going to load many comments in that view I'd rather it load instantly. Also, what's the purpose of this modal? There's a "Space -> Read" for the comment that I'm already reading. I don't get it.
2. Oh, I didn't notice that. Might be caused by the way the new tab is opened. Gonna look into that, thanks.
3. Good catch, gonna change that.
4. Do mean contrast wise?
5. You're right, the spacing between paragraphs is missing. That will get fixed.
6. Yea, I will probably increase the speed of the transition to match the rest of the UI. The modal exists for reading longer comments. It's unnecessary for most, but during testing I found quite a lot of very long comments (especially in Ask HN) that didn't fit on the screen. Scrolling directly inside the comment felt weird, so I added the modal. It also increases the text size and makes it easier to read long paragraphs.
Thank you very much for your feedback!
Regarding 4, yep the contrast is less. Hard to make black text stand out against shades of green. An even lighter shade might work.
Otherwise I think it's really good. Reddit should have aspired to something this well thought out.
(I'd also like page up / page down.)
This accounts for 2/3 of the of the space. Please use all of it :)
Thank you!
Oh and page up / down is noted and will be added soon.
Probably not to everyone's taste but I'd prefer for the active news item to be in the center of the screen and not at the top. I keep scanning down the page with my eyes and then realising I need to press down 20 times to get to where I scanned, I probably wouldn't scan so far ahead if it was vertically centered but also the page up/down would alleviate some of this.
Otherwise very refreshing and looking forward to see it iterated.
It's also incomplete - but, in fairness, building a HN client that most people would consider "complete" is a massive undertaking (HN login, themes, customizable keyboard shortcuts, mouse support, pre-fetching, "read" status markers).
Instead, here's some feedback about the interesting/different parts of the design:
1. Having WASD, HJKL, and arrow-key navigation is nice - most tools commit to exactly one of those three.
2. I believe that not blurring the leftward (parent) column would be better than giving a toggle-able parent comment in the current column.
3. The keyboard shortcut + "Help" button in the corner is great - I regularly forget what bindings are available for a new tool that I'm in the first few minutes of using, and then often get bored and leave.
4. Placing the comment content all the way at the top of the box slightly encourages focus on that content, which is good - HN puts the username and posting age at the top instead, which is a distraction, and makes it slightly easier to think about users instead of content.
5. Lack of pagination is great - no more artificial second-page barrier.
6. You could use more of the screen space - for me, about a third is just empty, even when I zoom.
Less interesting stuff: there's some visual rendering bugs of italics and the "M" menu isn't keyboard-navigable (this isn't meant to be a feature request; I know you're focused on making the site keyboard-driven). Congrats on making a relatively resource-efficient and visual-space-efficient web app!
Recommend taking an additive approach—to enhance navigability with new methods, not throw out the stuff that already works (and works well) as a consequence of reasoning that this is A New Thing and New Things are supposed to replace what already exists. Casualties here include stuff like clickable hot zones for navigation if in the given moment one's hands can provide higher bandwidth that way for a desired action, operating on e.g. a link by context menu e.g. to copy it, mouse scrollability, etc. Unlike the poorly reasoned bickering below, it does not follow that these interaction concepts are at odds with one another. Keyboard and mouse accessibility are not mutually exclusive.
The only thing I'd love to have added would be an inline mode, where replies to comments are also shown on the top level of the comment section, but indented, just like it's on YC's HN.
More things:
- Always show comments count
- Reloading a comment section should not bring you back to the front page (clear entire state).
I'm not sure about an inline mode because that would kind of defeat the initial purpose of this app. But, I did write it down and will see if there are others who would like this.
There is now an option to always show the comments count.
I'm currently working on exactly that issue. One of the next updates will add support for changes to the browser history and URL so you will be able to reload or share the URL at any point.
You can check the changelog if you are interested: https://haxplore.sleekplan.app/changelog
The only thing keeping me from using this full time is the information density. On normal HN I see the top 30 links all at once. On this one I only see the top 11 links before I have to scroll. I think a "high info density mode" where I could see the top 30 links (or more) would be nice.
That's actually a great idea. If you say "high density", do you mean just less whitespace/spacing or should stuff like the upvotes, author and date be completely removed from the initial element?
PostgreSQL 14 (postgresql.org) [20px tall]
399 points by jkatz05 2 hours ago [10px tall]
[5px spacer]
If you decide to implement a high density mode (I would make sure other users beside me want this before doing that work), the primary concern IMO is just cramming more stories onto the page so users can scan down the page to read more story headlines without scrolling.
That could be achieved many ways, but if it were me I would probably do a combo of reducing whitespace, reducing font size, and removing/consolidating story info (i.e. instead of URL having it's own line, move a truncated version of URL next to story title like vanilla HN does)
That’s a refreshingly humble request. So often in FOSS I see people demanding features, even being downright critical at times. It’s really nice seeing someone suggest their feature request might not be popular is rare.
Thank you for restoring my faith in humanity :)
OTOH there's between 235px and 325px of height before the first comment under the parent story/comment, which is somewhere between 1/4 and a 1/3 of the entire available height. The Back and Open keyboard hints could be moved elsewhere or the empty space up top could just be shrunk. And why isn't Toggle Full Post with Back and Open, either all at the top or all in the parent?
Similarly having the "By pabue" on its own line (instead of inline with the controls below it) takes up a lot of room, and the least clear part of the UI is the comment author.
It's also not obvious where you are in a list of comments, having a minimap might be nice and quite fun to develop! And being able to go forward (and back) a page would also be nice. It's a nifty project though, good work :)
But this app is an interesting take. I'm also not happy with unnecessarily mouse-driven interfaces
The one issue I see (as others have mentioned) is that it's difficult to orient yourself because the app only allows focusing on one thing at a time.
This is kinda how I imagine all my clients should work. HN, feedly & NetNewsWire, Overcast & Podcast.app, Music.app.
It's like a synthesis of file explorers and media consumption.
Bravo.
(I've got a bunch of other UX notions for power users.)
Let's see if some of them get inspired. ;)
In general, though, I agree with you - I think that most of the media tools that we use today could benefit from Miller Columns and a keyboard-driven design....
I'm interested in talking about UI affordances for power users - would you be interested? If so, drop me an email (you don't have your email in your HN profile, and in-thread discussion isn't a good use of HN space).
[1] https://en.wikipedia.org/wiki/Miller_columns [2] https://pharo.org/features.html
1. Navigation
For navigation, my blue sky notion is to have ad hoc hierarchies. So imagine allowing the user to reorder those Miller columns. And any metadata item can be used as a column. And then the hierarchy browser (Finder equiv) infers the new tree.
This is probably called faceted navigation.
So in the case of Haxplore, the columns for one nav view I want are 'Author', 'Date', 'Kind' (eg OC, Show, Ask).
For music, I want a nav view to sort by Producer.
For movies, views for Director and Writer.
For podcasts, views for Guests and Topic.
Any way, you get the idea.
2. Filtering
All nav views should have filters. (I forget which IDE allowed this.)
Not just Spotlight style results, or Amazon style faceted product searches.
Because I still want to drill down thru the resultset using Miller columns.
3. Quantified Self
Log all the activity and metrics client side.
For podcasts and audio books, log when and where I was.
For all content, record if I looked at it, how long I looked at it, if I just deleted or skipped, etc. My count of podcast subscriptions is ridiculous. But I'm afraid (FOMO) of deleting something I liked. My own metrics would help me manage my consumption.
Creating ad hoc 'follow' subscriptions would be cool too. Remember HN commenters I liked. The podcast guests I liked. Ditto producers and directors.
Etc.
Some feelings I had while using it, just in case it's useful to you:
- To me is a bit strange than when I'm focused on comments, by pressing Enter it opens the URL of the article (that it's not my focus right now).
- Also I would like to add comments, but I think in this version is still not possible.
- As others mention, it wouldn't hurt that those actions can be both done by mouse and keys (or maybe the title of the submission should be "HN with keyboard")
I like the colors and the blur effect, nice touch :)
1. In get why that might be a bit confusing. The problem is, you can't focus the article/post after opening the comments, so you would have to go back in order to open the link. I didn't find a better solution at the time, so I just left it like this. Maybe I just have to think a bit harder ;)
2. I mostly just read discussions that's why I didn't even consider a comment feature. But I'm definitely gonna look into that and see if it's possible.
3. Might be a good idea. I actually had a mouse/keyboard switch at some point but removed it because it was a bit buggy and confusing. Maybe I should rethink that.
Thanks for your feedback!
I like to use the mouse anyway. Each post has the number of comments, something like "123 comments ->" Can you make the number of comments and the arrow clickable? Also, the "<- Back" inside each post.
It I'm reading a comment, the author and "open" should be clickable too. I didn't understand what "open" means, perhaps change it to "open in HN".
I'll consider changing it to "Open in HN". It is more clear about what it does but it's also longer and maybe a bit redundant.
* Some way to go to the top of the page without refreshing the page.
* Some way to load new posts asynchronously without refreshing the page.
2. Do you mean loading more posts when you reached the end of the list? This will also be added in one of the next few updates.
Thank you!
I use a Mac Air. I don't have these keys.
> Do you mean loading more posts when you reached the end of the list? This will also be added in one of the next few updates.
No, I mean the usecase when let's say I'm viewing a post or even when I'm on the home page, and I want to check if there have been new comments or new posts without reloading the page.
Overall its nice to use a keyboard but the information density is so poor and the site isn't as performant as news.ycombinator.com so I won't be making a switch, and I can't comment on how it renders comments since it doesn't open comment sections in firefox at least.
I've been on the hunt for a HN TUI client or some other way to make threads play nicely with a text based browser. That would really help with my newsboat based internet consumption if I didn't have to open a browser to read comment threads. I have gotten close, but with all the text based browsers I've tried, they all don't indent comments correctly in threads which makes it not very useful.
Took me a while to realise you opened things by pressing the right arrow/D/K, and instead O and Alt+O open the current comment or article in HN. I'm not sure why they have different keypresses, makes it even more confusing.
Unrelated, I love keeping my hands on home row, regardless the website I'm visiting with the help of browser plugin vimium.
It allows you to navigate with hjkl, label links and opening them with t, quickly jumps to opened tab with o, etc
- I'm missing a "jump back up" shortcut, something I'd recommend using capital "G" for, like in Vim.
- It seems it hits some hardcoded limit for paging? i.e. it does not allow me to open more stories once I reach the "bottom" one.
- Two things I'm used to that exist in the Android app I'm using: * stories are numbered, so I see how far from the top I am. It's a dimmed down grey number, but it's there and I like it. * depending on the number of comments, an article can be marked as hot with a "fire" emoji. I got used to that to immediately spot things which are trending.
Overall, well done! I am definitely subscribing, and I'll test if I can switch to it on Android.
(edit: typos)
Couple of suggestions thgh. 1) Blurring can be avoided. 3) jump to parent story of any level comment via keyboard 2) Is there possibility of logging in? so that we can do comment/upvote/downvote as well via keyboard.
One suggestion: I know the client is designed to be a single-page app, but is it possible to have a constructed permalink for each submission and comment thereto? On hn.premii.com that I mentioned above, I can have links in the form of hn.premii.com/#/comments/28704873 so that I can create a bookmarklet to jump directly from a original HN page to a “optimized” version. I hope it will also be possible with yours.
P.S. As a default workaround for HN design issues I use lynx with vim bindings. This gives me font clarity and minimalistic interface.
I was trying to create some web-UI like this to read my own dump of bookmarks/notes on various devices.
What language/frameworks did you use for the web UI?
Is the source available somewhere gitlab/github?
I'm using Vue 2 and Javascript, because I actually started this project a while ago. I will probably upgrade it to Vue 3 and Typescript soon. FOr the styling I'm using Tailwindcss.
It's currently not open source but it will be as soon as I fix up some of the mess. It went though quite a lot of changes and that's very visible in the code ;)
I actually moved it to a separate domain, because I don"t think people will remember haxplore.pabue.co when they think about HN.
You can now find it here: https://haxplore.com
Reminds me of my own Chrome extension, Refined Hacker News [1], with almost identical keybindings built into the HN interface. Neat coincidence :)
[1]: https://github.com/plibither8/refined-hacker-news#on-items-a...
Don't worry, I will definitely keep working on it. With all that great feedback I don't think I have any other choice. ;)
There is also something to be said of the inherent, tactile satisfaction derived from a button-press, as opposed to a mouse-click.
In my eyes, that just proves the feasibility of the input method, as opposed to having to click around - it can work for a variety of types of content!
I was actually thinking about adding support for reddit. Might add that in the future.
Been using this for the last couple of days. There's a slight tradeoff due to not having a good overview of the "discussion tree", but overall it's a super smooth way of browsing HN!
Also nitpick, Alt-H is not an easy key to hit on mac, why not just '?'
On Firefox on Linux with SwayWM
None of the hotkeys work except the arrows and hjkl.
Alt-h opens up mozilla's help menu.
Enter opens up the site's help menu. (maybe because that was the last thing I clicked on?)
And 'o' does nothing that I can tell.
Good question. The content part is actually moved left and right using CSS transforms. The sliding animation is just a result of adding a transition for this property.
Hope this helps. Otherwise just ask ;)
I was thinking about adding support for reddit. What opther feeds do you have in mind?
Speaking of, on FF when I go to the Hacker News home page and I tab navigate, the only thing it can tab to is the search input at the bottom. Does anyone else have issues or is it just me?
One thing I noticed on mobile is that I try to tap on the up and down arrows quickly to search between comments, which is often misinterpreted as a double tap in the browser and it zooms in.
I would also favour seeing a hn-theme that preserved the colours and fonts :)
* the site marked when I had already clicked a link * the site respected URLs so I can easily share links * I can read older HN links in your interface
Thank you!
Very well thought out!
I've been browsing through HN using Haxplore and I can really navigate fast! This is kinda like vi
> If you don't like it, just use Hacker News.
Yes, I will not be using this site. Just giving my feedback and opinion on the UX just like you.
If someone shows me a project for keyboard navigation, I won't complain that there is no mouse navigation, as that would go against the very nature of the project.
> Yes, I will not be using this site. Just giving my feedback and opinion on the UX just like you.
But you're not actually giving any useful feedback on the UX the person has implemented, you're giving feedback towards some UX that doesn't exist and won't exist as it's outside the scope of the project.
It's like someone showing you that they built a car for themselves, and your first comment is "but does it float in the sea?". No, of course it doesn't float, it's not a boat.
How is that useful feedback to this project?
It seems to me removing scrolling is actually work as opposed to just letting the default behavior of the browser to prevail. I'm not saying there is no point in having a site with keyboard navigation as the primary mode of interaction. It's just that when you go out of your way to remove something that should be supported natively you're scope creeping.
If losing selection highlight is a problem just disable that feature only why mess with scrolling?
To use your boat example: there is no point trying to sell kit cars if people are only interested in buying boats.
Ok, this is a pet project so the author might have no intention of taking his design and trying to monetise it. But as long as feedback is civil I can’t see why opposing opinions can’t be shared (and ignored if the author so chooses).
I know on my personal projects, comments that seem to miss the point often then inspire me to create new things. So I’m always interest in any feedback. Just as long as it’s not people moaning about the name lol
Use HN, or any of the 100's of clones/implementations that exist.
This whole "user hostile" thing is getting boring, not everything has to cater for everyone and their desires. This is a pet project being shown off for keyboard navigation - there is nothing "hostile" about that. At all.
Also I didn't quite get how I was supposed to see comments
Maybe it needs a small guided tour thing
If you added paging, it'd be perfect.
Paging is something I actually wanted to add at the beginning but then I tought it wouldn't be necessary for an experiment like that. I'm also not quite sure how it would look or work ui wise.
+1 for dark mode. But also, would you add a shortcut for the left hand for opening comments? I lost my right arm in a tractor accident, and pressing O is a bit annoying.
Just kidding, but I do like the idea of R to reply.
I understand that some webapps absolutely need JavaScript to function, but I wish it was handled with a bit more tact than a completely blank page displaying a single sentence asking me to enable it. I'm not calling out op, twitter and quora do this too.