This Web site pays real money-and it cuts to the quick of intellectual property and patent law-by offering cash bounties for proof of prior art (earlier instances of use of the concepts) related to specific searches. At a recent look, $10,000 was up for grabs to anyone who could prove a Web-based "one-click shopping" tool existed prior to September 28, 1997. Coming up with this kind of proof isn't easy-in most instances, law firms have already tried-but find prior art, and the money is yours. Even if you don't land a big score, the site is worth a look because it reveals which patents are currently under scrutiny by lawyers and others interested in toppling claims made by major corporations. Good hunting!