Isn't it against Facebook policy to use the like button in this manner? http://developers.facebook.com/policy/ http://developers.facebook.com/policy/ You must

Isn't it against Facebook policy to use the like button in this manner? http://developers.facebook.com/policy/ http://developers.facebook.com/policy/ You must not incentivize users to use (or gate content behind the use of) Facebook social channels, or imply that an incentive is directly tied to the use of our channels.