PerformancingAds - Largest 125×125 Ads Marketplace
A lot of bloggers sell their sidebar space for ads. Normally, they will sell three to four 125×125 ads space, and the price ranging from $50 to $250 per space.
Selling an ads space is not easy, especially for unpopular blogs. So, you may need a system to help you get advertisers.

Now, PerformancingAds can help you. It was found by a group of experience people which familiar in buying and selling ads. You can place regions and earn credits when advertisements are booked in your regions. You can then use those credits to buy ads displayed on other publisher sites.
The affiliate program is quite interesting. You can earn $10 for each publisher or advertiser that you refer and earn 5% recurring revenue on all advertiser ad buys for life. Some example here:
Let’s say that you refer 2 new advertisers per month and each spends an average of $250 per month. Within 1 year, you’d be making a cool $300 per month in 100% passive income.
But wait. Let’s say that you referred 5 new advertisers per month. Now you’re talking over $750 per month after 1 year.