I've got to throw in my two cents, I recently ran an ad campaign that was extremely successful with very low cost per not only click, but cost per conversion/ac

I've got to throw in my two cents, I recently ran an ad campaign that was extremely successful with very low cost per not only click, but cost per conversion/acquisition. Keep in mind this ad campaign only dealt with people located and posting in the US but even if some of the "clicks" were fake it still was the cheapest and by far most effective campaign that I've ever ran. I was constantly updating and monitoring my campaign just like an Adwords campaign which you should. These aren't "set and forget" hope you get customers. Monitor your return, if results are poor move your ad dollars elsewhere.