Facebook has released the functionality to integrate iframe apps as a tab within pages or profiles as had been promised in 2010. This will open up many new functionalities. Facebook has established that iframe tabs are the preferred method to deploy.
Hereby, the current FBML tab will no longer be used due to the complexity of the Graph API and complications with Auth2.0 authentication system which is considered to be unnecessary since the app will not be requiring any 'sensitive' information from Facebook.
FBML tab has been functional however not worth pursuing. Current code for the FBML tab is as follows: