I know that most people do traffic exchange with sites such as traffichoopla, easyhits4you just need the traffic to their site and the odds that someone could buy a product are next to zero. My question is, how close to zero are they? Has someone managed to sell a product every 10 thousands traffic exchange visits or something like that via clickbank affiliate links? Or maybe it's a utter waste of time (save the number of visists to your site, and the chance that someone could come back)