Originally Posted by Mediamix

Buying ads is not simple. You need to filter that traffic. Optimizing your campaigns at ad-networks is a real pain in the ass if you don't know what you're doing. Most webmasters en company owners don't know what they are doing when it comes to buying traffic.

That's why you see so many people complain about traffic brokers. Most people begin with buying a few bucks of traffic and when that doens't convert, they start threads filled with complaints about traffic brokers. But in reality they just don't know how to make money with paid traffic.