We monitor nothing, and we do not keep track of our users. Like most of the apps and sites do, we too use analytic libraries, but we do that only to get an estimation of the number of users who are using this game.
You do not need to register to this site, but we do ask you to Login to your FB account to to play a game that uses coins. This is because we need to keep track of the coins that you have available. Your email address is saved on our database and it will never be given to 3rd parties.