Lately I have quite a bit of time on hand which has helped me get myself up to speed with all the new “gadgets” available online.
FBML is one of them.
“FBML stands for Facebook Markup Language, and it is the code used in Facebook applications to reference items on the social network, like user profiles, groups, feeds, and other data. If you’re really looking to integrate your landing page and get interactive with visitors, it might be worthwhile to learn this language.”
Here’s a good tutorial on “How to Customize Your Facebook Page Using Static FBML”.