If you have an established blog, you can start earning money with PayPerPost. Their minimum requirement is for your blog to be at least 3 months old and for you to be an active blogger.
When I first joined, opportunities are paid from $5.00 to $10.00 per post. With the newly refurbished format, they have opportunities that are priced up to $1000 per post! Not kidding! Of course, every advertiser does have their own set of requirements - usually a specific Google Page Rank, Alexa Rankings and PayPerPost's own rankings in the form of Tacks.
Every post will be manually approved by PayPerPost. Advertisers can read the entries that you write for them and vote for you ( min 1 tack, max 2 tacks ). Similarly, advertisers can also ban you - which will affect your tack ranking and eventually make your blog not so favourable.
Besides blogging for money, you can also refer new bloggers to join Payperpost and be paid $15.00 for each blogger who signs up & successfully get paid for the first opportunity that they take up. Furthermore, you can also get your blog visitors to review your blog and in a win-win situation, both parties get paid. The below is how the link look like. I am blogging for Payperpost in my other blog (
http://www.homebusiness.more2go.com) So, if you would like to try this, review my post! :)

Payperpost is still at beta stage, so you should expect new exciting changes!