I have three proxy sites that have about 2-4k unique visits per month on each site. I want to sell you links on my sites for only 2$ per link or banner(468x68)/month . Most of the traffic is from USA and Germany. Also if you have a proxy group you can place a submit box on my proxy sites at only 2$ per month.( see the picture to see the positioning) Here are the traffic stats for one of the proxies. And here is the places here the advertising will go: