Facebook gives you a functionality to add facebook applications as tabs on your existing pages. Also there are (programmatic) ways to be able to find out if users have liked your page or not. This functionality can very well be used to 'entice' users to like your pages. We have added a "Welcome" tab to our Facebook page. Do take a look at the same and let us know what you think about it. This application is completely CMS driven, so you can change what displays on the pages without knowing any HTML. If you like the application and want to know more about it mail us at fbapp (at) codefire.in