Facebook just announced that as of today 03/11/11 Facebook will not support FBML for Fanpage. Click here to read on developers site. There was a long debate on this that someday in 2011 facebook will discontinue use of FBML but it was not confirmed.
So this means that if you are going to use FBML in your fanpage to customize your landing page you will not be able to. The users who are already using FBML will not be affected but facebook strongly encourages everyone to move from FBML to using iFrame applications. So if you are using FBML on your fanpage then to no need to panic.
iFrame in now supported on Page tabs also.
Before February 10, 2011 facebook did not allow iFrame on page tabs on fanpage. It only allowed it on Canvas page (on facebook applications). Facebook applications are different than fan page. But as of February 10, 2011 they support iFrame on both Canvas page and Page tabs. It do not also require and activation to load them. Before it needed an action to load the iFrame so you would need a kind of javascript. Well, let’s not go that deep. I will soon come up with the tutorial on how to add the iFrame. So keep an eye on my blog.
Also add Click here me as friend on Facebook and Click here to “Like” my Fan Page.

