Facebook crashing on both 6.0.1 and 6.1, iPhone 4S, 5 and iPad 2 and 3.
There'll be an immediate FB update I'm sure, but for a 6.0.1 commercial release it's unprofessional.
Apparently it is something on FB's side today. Or so it seems.
http://www.cultofmac.com/199348/its-not-just-you-facebooks-ios-app-is-crashing-for-many/
With a network like FB, I can't really be arsed to use the web version. Today will be Twitter day!