As facebook users increases each day, more and more application have been added to the most used social network website of the year. Every day, there are a lot of application developer and company integrate their website/service to facebook.
Online Browser games is one of application model that can be integrated into facebook. With the availability of facebook API, application and developer are now competing in facebook network. By integrating an online games into facebook, a facebook user can enjoy the game while stay in touch with their friends and online buddies on both, facebook, and in the game itself.
In mafia wars game, for example. A friend of a facebook user, is also his/her friend in Facebook Mafia Wars Game. And by exploiting such connectivity and network, online games now has millions of unpaid ambassador. People are tend to invite their friends to play tha same game, since they can ask for any help and it brings more fun to play online games with people they know.