The application we are working on facebook has gone public on facebook, you can try it out here : Prize Arcade
I have programmed the front end of this app in ActionScript 3 and using the Flex 3 Framework.
You can play and enter to prizes to get a chance to win 100$ every day
Other than that I am working on my own 2d rpg on facebook which you can find here :
http://apps.facebook.com/nightfall
It is also done in flex3 and still in progress but you can fight monsters and other people from the hall of legends and you can equip items from your inventory.
Haven't worked on Dark Age for a while now so no news there.
That's all for now. Happy Valentine's Day!