MindJolt have recently starting making standalone Facebook apps for their games. I received an email stating that Picture Find is one of these, although I expect others to follow.
I’m not entirely certain what I think of this. Sure, it will create added exposure for the game, and presumably increase the income, but in-game ads are disabled for the first two weeks, to, according to MJ, increase viral spread. Which means that for the first two weeks they make advertising income from the game, but I don’t.
I had planned to start integrating my own games into FB as standalone apps, starting with Solitaire: Captive Queens, but currently neither of the ways I’d monetise the app – AdSense and MochiAds, are approved advertisers on Facebook – so this plan is currently on hold.