Great job.
Just curious, I have had similar ideas, but saw this NYT article about sites like CureTogether.com and PatientsLikeMe.com, & decided it was a met need.
http://www.nytimes.com/2010/05/30/business/30stream.html?pag...
I am passionate about using tech to improve healthcare & would love to talk over email/IM about your idea in detail
All the best & keep up the great work