SatoshiBones is selling 10% of all future profits for a total of 250BTC:
http://bitzillions.com/satoshibones/stake They are wonderfully honest and transparent but from looking at the payment reports it seems as though not even the biggest investors are making more than $20 per month. The converter I use is here:
http://coinmill.com/BTC_USD.html I wouldn't invest in this because I want my investment to be a highly profitable one! And won't each investor's monthly payment decrease even further as the 10% is dispersed between the final total of a HUGE number of investors? Because if that's how it works I don't see why anyone would buy shares.