AdHitz - Lets you sell ad space on your site. You choose the details and then paste the code to your site.
Rakuten LinkShare - Building long-term, profitable partnerships between Advertisers & Publishers. Experience why Rakuten Affiliate Network (formerly LinkShare) was voted #1 Affiliate Marketing Network 3 years in a row.
AdVirte - An advertising network for both advertisers, and free for web-masters who want to monetize websites...
Commission Junction - CJ Affiliate by Conversant (formerly Commission Junction)
Google Ads - Easily boost website traffic and sales with Google AdWords. Appeal to customers who are already interested in what you are advertising by appearing on Google searches.
ClickBank - ClickBank is a secure online retail outlet for more than 50,000 digital products and 100,000 active affiliate marketers and are consistently ranked as one of the most highly-trafficked sites on the web.