I was hoping it would be google that would step up to the plate, not facebook to be honest. The friendfeed team is a serious weapon for facebook to wield against google and I don't know why the FF guys would enter this war, on this side. Maybe Google did something to piss them off? On the plus side, the FF guys will now get paid for the FB dev work they have been doing anyways. If I recall correctly buchheit was also involved in adsense, another pain point for facebook. Also the real-time search assets that fb would get from ff may fill the goals that facebook had with the attempted twitter acquisition.
The plot thickens...