If you were looking for something more worthwhile to spend 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
