Before using Traffic Holder I was using Google Adwords pay per click service. Google was relatively expensive, but productive. I paused my Google ads and started using Traffic Holder. Overall, my "sales" are as good as they were with Goolge Adwords for a fraction of the cost.
I recommend Traffic Holder, but like any method of generating traffic you have to tweek it to fit into your niche and demographic.
Finally, TH allows you to choose sites you want traffic from. Some of these sites have closed their trades or are extremely selective in who they trade with. By going through Traffic Holder you can benefit from their traffic without the link trade.