That's insane.

I personally research Twitter and message boards the way you described it for "blogdia". But I don't think there would be people / wantrepreneurs willing to pay for such an app.

Instead, why not doing a private / paid newsletter for that? Or a site where wantrepreneurs can buy your market research about a specific idea. And only a limited number of each idea can be sold in order to increase the perceived value of it.

Interesting. I left me twitter at the beginning of the doc feel free to reach out and we can talk it through.