In my opinion, Commission Junction is a leader in performance basedaffiliate marketing. They offer a great way for webmasters to generate extra revenue from their website properties.
Here's a quick overview of their business model:Publishers place ads and links directly in and around their content and earn commissions. Online advertisers extend their reach, build their brand, drive sales and lower customer acquisition costs — all on a pay-for-performance basis. In laymen's terms, Commission Junctions allows you as a webmaster to choose from a wide variety of affiliate revenue programs. You earn money by placing ads on your site, and the payment structure is based on referrals to the target site. By referrals I mean click thrus, automated form submissions, or actual sales.
Take a moment to browse through their site. They have some great money making opportunities for enterprising webmasters!