Might also want to check how topcoder did it. They're not perfect (like WoW) but...

		Herring on April 22, 2010 \| parent \| context \| favorite \| on: Why aren’t you contributing (To Python)? Might also want to check how topcoder did it. They're not perfect (like WoW) but they've built a huge company on free labor, basically. WoW gets the serfs to pay for it.