Buy a Page $25/year fee from MonopoWiki
MonopoWiki has a major improvement over old style paid wikis. What makes MonopoWiki so different with old style paid wikis is that you allow to create, edit and profit from MonopoWiki site instead of simply purchasing a page, put up content and hope someone visits.
Monopowiki allows people to contribute without having to buy a page. If you find a page particularly profitable or valuable, you can pay a $25/year fee to get a monopoly on the content of that site (hence, monopowiki). This provides more pages, encourages interlinking among and a way for all contributors to profit. Payment can be made by paypal, and within 2 days, you have to complete control of that page.
Currently, they are launching a $10,000 giveaway contest. It is pretty simple to participate in this contest, what you need to do is that simply make a post about the site, put it on your blog and shoot the link their way. The winners will be announced May 2 and they will receive a free Monopowiki page for a year.
What are you waiting for? If you are interested in buying a page from MonopoWiki, make sure you join their contest. In case you are not selected after the contest, you can use your own money $25 to buy a page per year.