A tiny update to Facebook for iPhone, but one that delivers great power and requires great responsibility: You can now strike mortal blows and un-friend people from your phone. That's some serious business, like the suitcase that carries nuclear launch codes. But for your relationships.
Less dire: Facebook Places now has map view, so you can see where people are at, rather than having to intuit their precise location in relation to yours. And check ins for events, which seems kind of terrible and also handy. "Yes, of course I went to your party! I checked in!" Sure you did. [iTunes]