You really must know how to use it. Created a few campaigns on TNX, and I can say I am pretty satisfied with the results. Acording to the low quality, not all the links there are premium/high quality. But thats wy you have the power over your campaigns, you can remove unwanted links, you can stop/freeze the campaign whenever you want to. If you are ranking for a medium+ business that would bring some income to your self, I suggest you use TNX systems ( might want to consider some help from experts over there until you get started) .