I'm considering starting a new (communal) blog for the mentally ill, but...

I can’t really seem to drill-down what exactly it should be. I’m thinking it could both be meeting place for the mentally ill… articles, a blog, a place for art, music, etc. I don’t want it to “compete” with other such orginizations. I want to keep it ad-free, if possible. But, I don’t even know where to start? How would I get people to join? I don’t want to exclude anyone, so maybe a friends and family section? Any Jellies have some insight? Perspective? Is this DOA? Would you be interested in contributing? All I do know, is if I were scouring the web, looking for help or solace, I’d be happy to visit that site.

I already bought the domain and made a temporary logo, but who cares if there is no substance or reason to visit.