Wouldn't it be nice to deploy a portlet to Liferay and have it work as an application in Facebook?
Check out our message boards at http://www.liferay.com/web/guest/community/forums
Go to the bottom and click "Add to Facebook".
We've configured our public message boards to write its output as FBML when consumed by Facebook. Check it out.
Every portlet in Liferay is automatically exposable to Facebook. Simply go to Configuration -> Facebook, set your Facebook API key and other settings. We provide two implementations, one that uses FBML and one that is a simple IFrame.
Our Message Boards portlet uses FBML because we think that looks nicer and has a better user experience.
Can you see where this is going?

