Google doesn't have a lot of content about my friends. In fact, none, other than some names, many of which I don't even recognize.

But, interestingly, I got a 404 when I logged out.

http://www.google.com/s2/u/0null?continue=http%3A%2F%2Fwww.g...

Edit: actually, I can't log out. Fascinating, I know.