If you haven't already hopped on the facebook app train then get yours today. These facebook apps are a great way to reach a new audience and earn some extra revenue. SocialMedia and Cubics are two excellent ad sources.
Buy and Sell Pals
Demo:
http://apps.facebook.com/buysalepals/
Price: $30
Picture Matchup
Demo:
http://apps.facebook.com/picturematchup/
Price: $25
The apps go into a folder that can be hosted on any domain and shared hosting account that supports PHP and MySQL. I will install the app for you if you wish. Otherwise, send you detailed instructions so you may install the app.