You may not have heard of Jimmy Wales, but you've certainly heard of his brainchild - Wikipedia. This website is one of the power houses of "social media" websites - where the community determines the content and polices itself. It operates to this day as a non-profit, taking no advertising dollars and run on a shoe-string budget.
What you may not be familiar with is Wales' other project - Wikia. Wikia is a for profit advertiser sponsored website with over 5 million pageviews per month. It's basically a wiki platform, that allows anyone to make a wiki of their own - for free - and some of the wikis on it are massive.
Have a look at the video interview of Jimmy Wales to learn more about this "side project" and better understand how wikis work.
