What I'm curious about is how are they planning to filter through all that crap.
That's a large part of what I meant.
They can probably easily filter out responses shorter than a paragraph, and there may be some way to filter for grammatical correctness (which I suspect correlates at least loosely with having a well formed idea).
http://www.impatientoptimists.org/Posts/2012/01/Do-You-Have-a-WorldChanging-Idea?WT.mc_id=1_11_2012_studentannualletter_fb&WT.tsrc=Facebook