[txt]

Hehe, this is getting ridiculous...Wasn't friendfeed.com created before facebook? Even if it wasn't (or was) there is no way this could hold up.

[pbiggar]

I'm pretty sure Facebook bought friendfeed. I'm not sure exactly how patents work, but it seems this would mean you couldn't cite friendfeed as prior art.

[mkramlich]

Don't worry, the USPTO doesn't know how patents work either.

[DennisP]

If a technique was publicly known, it counts as prior art.