"While I’d been tracking with great interest the progress of OAuth 2.0, Facebook lit off the powderkeg yesterday by announcing that their entire API was moving to the protocol (as well as to RESTful JSON). As a developer who had been constantly confounded by the relentlessly hostile environment that Facebook seemed to present to developers, yesterday was a sudden and welcome about-face. The acquisition of FriendFeed, it seems, gave Facebook the talent they needed to do it right this time." - τorƍue