Searched but couldn't find any good threads on this. I just got a trial account with them and am checking it out. I'm not sure what to think yet. It seems that the system won't actually tell you what links you're getting and, though you have control over the type of links you build, you don't have any control at all over which links you get specifically. Has anybody used it? Horror / success stories? Seems like it could be a good tool for tiered links but I would be uncomfortable doing this directly to one of my sites.