I recently joined a really cool site that you'll be interested in.
You take the links that you post on the web and change them into links that can earn you cash!
You can post links anywhere, social networks, blogs, emails that you forward etc
For example, you post a link on Myspace about a car video on YouTube, you use a LinkPayer link instead to display advertisements to the person that clicks on the link when they leave your Myspace, then it sends them to YouTube.
There's a referral program that pays 3 levels deep so you get a share of what friends earn.
Btw: They are currently putting $5.00 into your account just for joining!
Here's the link, including my referral so that I get paid! ;-)