From the latest patch notes for Highborn, a fantasy strategy game for the iPhone that required connecting with someone on Facebook to play a multiplayer game:

Removed Facebook-based multiplayer (NOTE: all existing Facebook multiplayer games will be deleted in this update)

This patch adapts the game to Open Feint, the current de facto iPhone gaming community. Although I was pretty disappointed in Highborn when it was released, but I'm glad to see the developers hammering out some of its problems.

What's more, it's free for today only. If you miss that, it'll be 99 cents through the first week of August.