Bloggertizer.com

There are no requirements, because you have just post advertiser links on your blog and get paid for it. So that is straight forward website (all you need is a high traffic website with good PR, I guess).

And the price of the post depends on your deal with the advertiser, on your website’s topic, popularity of your blog, frequency of your blog updating, PageRank and some other factors.

Bloggertizer is a great earning tool if you have a frequently updated blog , lots of sites linking to you and high Google PageRank.