Social game developer Lolapps Media is one of several firms suffering a ban on user communications following claims that they leaked user details to third parties.
Facebook has prevented all but one of Lolapps' games from posting Wall notifications and their users from sending invites or messages to other players.
Facebook's developer blog also revealed that "We will require these developers to submit their data practices to an audit in the future to confirm that they are in compliance with our policies."
Facebook did not name the developers in question, but Inside Social Games discovered that Lolapps, previously implicated in the User ID leak controversy, had its communicatoin channels shut down.
Recent Lolapps title Ravenwood fair, released since the UID affair, appears to have dodged the ban.
Addressing its most recent recent privacy scandal, Facebook stated that "We discovered some instances where a data broker was paying developers for UIDs.
"While we determined that no private user data was sold and confirmed that transfer of these UIDs did not give access to any private data, this violation of our policy is something we take seriously."
Meanwhile, a class action lawsuit has been filed against Zynga, alleging that the FarmVille-maker had also knowingly leaked UIDs.