The crowdfunding public is already pretty vigilant, with a few high profile frauds having been sniffed out.
But when the crowdfunding regs get published, a new profession may appear, that of the whistle blower. The SEC actually has an Office of the Whistleblower that deals with public informants.
And you can make some real money turning in fraudsters since the SEC will pay for high-quality original information that leads to an SEC enforcement action in which over $1,000,000 in sanctions is ordered. The range for awards is between 10% and 30% of the money collected. Just two weeks ago, the SEC awarded $25,000 to three whistleblowers.