MD Banner is a category/country targeted 3:2 banner network with a 3% referral program, 2000 free impressions, stats, anti-cheat protection, flash and text banners, trade impressions between 4 ad sizes and more with free membership. When you refer members you get 3% of the impressions sent to the exchange by your referrals. Paste the code on your site, just like most other exchanges, but MD Banner will track and credit your referrals for you.