1. The slides on the main page aren't showing up for me in FF or Chrome.
2. You're targeting avid readers, and are trying to save them time, but you're pushing video how-to's? Text + screen shots, please! (Or maybe A/B testing will prove me wrong)
3. Why are all the images of articles tilted and in such small font? I want to see how well your service works for me, and what's better than reading an article it's analyzed?
4. Your how-to for RSS scares me a bit. It goes by so fast, and I have to copy-paste URLs? I have to find RSS URLs that as this article mentions, are getting increasingly hard to find? I'm already subscribed via Google Reader. I could copy the URL from the 'Details and Statistics' of a feed, but why can't you use their API to bulk import my feeds (competitors to Reader do this). I'm not sure if you could automagically rewrite Reader subscription URLs once scraped, but it seems like the easiest option to me (as long as you have an intermediate page where I can exempt certain feeds.
5. Is there any way I can see the results of your bookmarklet on a few actual articles before signing up? Even if it's just a mirror of some popular articles with the highlighting precomputed, as long as it's the whole article. I feel like you have a lot of work to do to convince someone that they're not going to miss some crucial bit of information by ignoring what you don't highlight.
7. Why do I need to remember another username? Is this a 'social' service? You already have my email!
8. It doesn't seem to work with Readability
9. Why do you need to track me with cookies? You already have me running javascript on every page I use the bookmarklet on...but I appreciate being told about them
10. How are you going to make money?
(just used the bookmarklet on this Wired article[1] currently on the front page of HN. Very surreal. And I'm not sure if I got the main point of the article or not...)
[1] http://m.wired.com/gadgetlab/2012/04/can-an-algorithm-write-...