Facebook credits on than virtual trinkets for some game, Warner has an idea: all those movies you said you "liked." Starting today it is testing out a plan to rent movies right on their respective pages for 30 Facebook credits / $3 each. The first one on deck is The Dark Knight (again?) which should be live later today, with more available to rent or purchase in the future. there's no word on resolution or other features, but at the price we're assuming SD only. Full details are in the press release after the break, but the rentals have the standard 48-hour VOD window and can be paused/resumed simply by logging back into Facebook. In its current state, we doubt Netflix, Amazon and the rest have anything to worry about as far as competition, but maybe Warner thinks it can snag a few bucks from simply making sure there's a buy button of some kind awaiting our various identities in as many places as possible.