Inblogads.com
|So here are the requirements :
- A WordPress blog hosted on your server (hosting service) so in blog ads don’t accept websites on a shared hosting like wordpress.com or blogger.com
- Google PR(that is a vital part. You will get more money if you have higher PageRank, as far as advertisers would pay you for an extra high PR link)
- Descent traffic (another important part, they might be paying on CPM (cost per 1000 pageviews) basis, so the more traffic you have, the better)