hmm, you effectively rake 15 percent, plus another 10 percent since you are doing most of the asking - you also control all "asking" and offer zero biographical information about the people behind the site and the specific profiles of the "askers" - you then seek financial contributions in light of all of the glaring omissions
does that about sum it up? otherwise a great idea - just bring in some transparency, including detailed profiles of those "askers" - and make it clear in each campaign that you currently take 15-25 percent (or possibly all) of the bounty, and you've got yourself a project!
/ syndicate