I don’t know if this line in their policies was recent due to the Stalker Check and Fan Check applications, but Facebook has a line in it’s policies now that would forbid such an application.

Policy: You must not circumvent our intended limitations on core Facebook features. For example:

  • You must not notify a user that someone has removed the user as a friend.
  • You must not track visits to a user’s profile, or estimate the number of such visits, whether aggregated anonymously or identified individually.

Source: http://developers.facebook.com/policy/#policies

Do you think this is a good thing?