How about something where users can comment on current features and make suggestions, along with voting of those comments?
That would be quite useful in figuring out what this app should be like. Give people what they want, right?
–edit– Ok, most of this has just been implemented. All that’s left is making the upvote view that updates how many votes a suggestion has. Also each user will only have a limited number of votes and should not be allowed to vote on the same suggestion more than once.
–edit– ok worked on a lot of stuff, integrated upvoting and also made the templates more OO by using a base template. Thought it would be a pain but it worked out fine. I also made the menu more practical by showing bolded links when you’re on that page. last thing to do is make a real home page for non-authorized users so they can get a feel for what this app is about instead of forcing them to authorize to see what it’s all about. I will probably setup a diff subdomain for the fbook authorized part (e.g.facebook.yourdomain.com).
–edit– had to change the app name because the domain name for the old name was taken 
. I got a domain finally. Just waiting for DNS records to update and then I’ll see if it works alright.
–edit– ok DNS records are ready and the app is working again. everything seems to be in working order…