Integrating Facebook Chat
http://developers.facebook.com/docs/chat#code
Also check out xmppframework for iPhone :
http://code.google.com/p/xmppframework/wiki/iPhone
This application is just basically a facebook chat app. Supporting both ipad and iphone and retina. I have all the graphics done, so no need for any design or planning, just th coding needs to be done. If you are successful and would like to continue after this project, an Android version will be made next.
It will include facebook login using the standard oAuth system and Facebooks Graph API. It will contain a list of friends, and allow you to send direct messages, or posts to their walls as well as obviously chat with online friends.
It will support push notifications and custom ringtones (sounds) for notifications from the app.
The app will also include basic profile pages for users, and have a feature to ignore certain people.
I have attached a very basic demo screen.
