@mkn That's a great idea, but the point is that I don't have the money to build it. How do you raise money for a site to raise money? And I am extremely dedicated to this idea right now. @gz The idea is fully developed, I just don't want every aspect of my business to be public before I have a concrete product built. And to "so when the $25k runs out, what?" Isn't that question the cornerstone to every investment eve…
Also, you could setup a pledge system, whereby money is called upon from pledgers only once a certain amount has been pledged. http://www.sellaband.com does this to help musicians do albums. Here, you could have say a few high profile angels or personalities to whom you've pitched make an initial pledge and then others might follow. The amount isn't that important, it's their profile/reputation. The site that could help is http://www.pledgebank.com.
Also see:
http://www.fundable.com http://micropledge.com http://www.chipin.com and maybe even http://TipJoy.com.
The good thing about doing purpose built fundraising site for startups is that a lot of the marketing work would be already done for startups that want to use it. In other words, the startups gathered in one spot would attract the investors.