Great idea, but not very great execution. It looks nice to use once, but hardly will be used again until see it again. You should add some things that will connect tha user with the site. Like "if u asked yourself a future question, post on our wall the answers" or something not like that! Don't limit yourself!
Make A plugin for facebook and an App for iphone. The result that the software gives you is small, so if u build something (an app for example) that usually gives you small result, it will fullfil your expectations. If you don't know how to improve the design and build an app for ex, look for some technical partner.
It really have potential. I just think that u should take care of what will bring the user back to my app/site/whatever.