Seing that there's this "Mark as Spam" functionality, I would guess that Facebook would quickly revoke the spammers ability to add like buttons to their page on

Seing that there's this "Mark as Spam" functionality, I would guess that Facebook would quickly revoke the spammers ability to add like buttons to their page once enough people clicked that spam button (or even make any further business with Facebook) IMHO, not that big a deal. Then again, I don't use Facebook, so I can't really know.