Facebook Fan Pages: iFrame Tabs
If you are using FBML for creating tabs on your Facebook Fan Page, you should know that you will not be able to add new FBML tabs starting on March 10th.
However, you will be able to use iFrames to create your new tabs going forward. When you use iFrames, the code for your tab is hosting somewhere else, for example, on your web host. And then you use iFrames to display that code in your Facebook Fan Page tab.
Here is an example of an iFrame tab that I created on my Facebook Page: click here to see the iFrame tab