HotAir
Idea 008 - Comments as you're browsing.
A browser extension that lets you annotate and comment on anything you see on the internet. You can tag your friends or share annotations with groups. You can either leave behind as a note for them to find or you can notify them as you comment. You would also able to see comments left by others (either publicly or from your friend groups). I think it would create a cool moment of serendipity to know a friend has visited the same website as you.
