1) Google is caching pages for a specific purpose and ensuring that they aren't cached/scraped by others:
http://webcache.googleusercontent.com/robots.txt
By not excluding robots, you're opening yourself to all kinds of situations where you are responsible for draining revenue from the owner of the content, which leaves you liable to lawsuits. By contrast, the way that Google caches content and their rules surrounding it do not generally harm the copyright owner.
2) Google honors all robots.txt, no-archive meta-tags, and other indications that the author doesn't want the page to be cached. Is historious doing the same?
... and then publishing it on the Internet.
(This is not meant to be snarky or to imply opposition to your product at all. I think there is a meaningful difference between saving to a computer and saving to a web-accessible, apparently globally readable website.
If I understand correctly, the users of your site are simply bookmarking pages. You are then caching it, storing it, and publishing it with a world-readable URL. There are many ways that you could provide the same experience to the user without making the cached page publicly accessible.
If you were to give users the option to make specific bookmarks world-readable - and you provided a disclaimer explaining that they should not make copyrighted material world-readable - then it might be different. But that's probably something you should discuss with an attorney.
Thank you for the information, I'll talk to our lawyer about it just to be safe.
Thanks again!
Your copyright law is similar to the US or Israel based one, not so strict as the main european one, which is based on the napolion code and is very very strict.
Thanks for the feedback!
Edit: I think it's a great idea though to save bookmarked content, just not to republish it without permission.
There hasn't been any case against them but theoriticaly someone could sue them. Who will win is a different story.
We'll have a chat with our lawyer regardless, thank you!