Collective2 (http://www.collective2.com/) is a web-based “do-it-yourself” hedge fund. Collective2 monitors over 5,423 trading systems. Whether you trade stocks, futures, forex, or options - you'll find a trading strategy on C2.
Think of it as an independent "trading system auditor." They investigate which trading systems are profitable. Then you can set up your own personal hedge fund, and have trades placed automatically in your brokerage account.