Social networking outfit Facebook has updated its developer platform terms of service to kill off ad networks that it says were running deceptive advertisements.

Facebook has been suffering from a wave of bad PR after allegations that some companies that power offer and survey related moneymaking operations for social gaming applications on platforms like Facebook's have effectively been scamming users. Named and shamed was Offerpal Media.

Writing in the company blog, Facebook's Nick Giano wrote that the battle was far from over.

He said Facebook faced stimulus scam ads on its own system earlier this year and pushed them off the site with "rigorous enforcement". It had to do the same thing months later when deceptive ads from third-party ad networks appeared in applications. Now it is doing that again as it sees the same adverts appear in the form of offers.

More than 100 developer applications have been either "suspended or brought into compliance" over advertising. More than half of them were used by at least a million Facebook members per month.

Facebook is not saying which ad networks or applications it has banned.