The free banner exchange provides a 2:1 banner ration, which means for every two banner impression that loads on a user loads on their website, they get one impression of their banner on a member site. Every other banner impression is filled by house (your) banners. You can sell banner space on the exchange and on the banner exchange homesite for 100% profit, plus increase the ration rate for paid members. (1:1)With no extra fees other than hosting which is included your first month, this site is a serious traffic generation and advertising based money making tool.
