Internally, this has been around for a little while (disclaimer: I work for Google but not on anything related to this). What continues to impress me about Google is: 1. Just how quickly this was built (really, it was quick); and 2. Google wants you to use our services because they're compelling not because we don't give you any other choice (ie "Don't be evil"). Sure there are limits to what it currently does but I…
I don't mean any offense, but the "Don't be evil" mantra is growing a bit tired. Evil is a strong word, and "not being evil" is a pretty low bar, IMO.