Isn't this called Tumblr?
FaceDouche.com
The examples of "dishing" above seem innocuous enough in print - but the reality of such an 'app' would be far more harsh.
"This dumb slut let me blah blah blah to her!" and other douchebaggery...
I prefer a VC model where Weinstein brothers find a Tarantino and make a film that not only makes money but can be watched with admiration for years to come. This isn't to say that Hollywood producers in days of old weren't talented, but these days you get bland product.
The same thing will happen with tech. A VC as producer may be good at identifying a unique niche that needs a product (say medical billing software) but you won't get a gem like a Flickr or Facebook that way. And that's not to say that the producer model is wrong, but it's not as much fun.
However I see it inherently flawed like the other idea websites:
1. Visitors tend to be idea people only and not really potential customers.
2. There is no clear promotion plan either except for 'build it and they'll come'. Ideas people see very little benefit because there's no user base, there's no user base because there's little benefit (chicken and egg problem).
3. All ideas are given weight equally. If I propose a flying car, that's great, everyone wants it but no one will want to take on such a risky idea. More: http://rationalwiki.org/wiki/Balance_fallacy
Look at Kickstarter; they have their users advertising projects and acting on them after the site got some momentum.
Needs improvement and change of current priorities.
I think in that situation offering the investor the right to invest first is fair, but that's about all you have to do (although in this case they're a perfect fit, so it's kind of irrelevant).
