Genius is currently building a tool to achieve exactly this. It's in beta as we speak, just put genius.com/ before any article URL to see an annotated version of it. For eaxmple, here's an annotated version of a "Eloquent Javascript" chapter [1]. If you want beta access get an account and shoot me a message there [2].
We* have been annotating tech articles/papers for a while though, they were stored in a sub-sub-channel of Rap Genius though and didn't get as much exposure. The best example is teh analysis of NewsWeek's story "The Face Behind Bitcoin" [3].
Interesting, the analysis of NewsWeek story is pretty much what I was anticipating. It seems the Genius ecosystem has grown a fair amount since last I looked at it. I'd definitely like an account. Messaged you on Genius.
That's very cool. If people make a habit of using this, this could be really handy for annotating programming tutorials. Just modified the HN bookmarklet to make a new bookmarklet to reload the current page in Genius:
Haha great minds think alike! We've got a bookmarklet already: http://genius.com/bookmarklet (you can only see the page if you're a beta tester) and a chrome extension coming that will tell you when you browse to a page that's already been annotated and let you switch to the annotated version. It's pretty cool stuff!
We* have been annotating tech articles/papers for a while though, they were stored in a sub-sub-channel of Rap Genius though and didn't get as much exposure. The best example is teh analysis of NewsWeek's story "The Face Behind Bitcoin" [3].
[1] http://genius.com/eloquentjavascript.net/05_higher_order.htm...
[2] http://genius.com/fanahova
[3] http://genius.com/Leah-mcgrath-goodman-the-face-behind-bitco...
*I don't work at Genius, but I've been an editor/mod/intern for the past 2-3 years working on various things including Tech Genius.