Showing related tags and posts across the entire site.
I am definitely getting google glasses with my Ray Bans once it becomes more familiar and with more options to come with.
Facebook, in a panic to steal the Google+ press, rushed out their new chat facility. The problem is, half the people hate it, and the other half can't even use it. I got it yesterday, and the problem for me was that the top of the new panel touting the new features is rendered at the wrong offset...