Our mashup Places from Facebook has been updated. Lets you create your own "Foursquare" for places in Facebook. Really – you can create customized check-ins for places. Each custom check-in is just a mobile web page where you can define content (offer), badge (e.g. benefits provided after check-in) etc.
Ask you visitors to check-in, mobile page will put custom defined data to user’s wall and show your "badge" after that. Really – your own "Foursquare". What is else? The stat for places provided by the Facebook. And your users are all Facebook users actually.