I never thought it was the "site's fault" the traffic is bad. Aren't there real human beings behind all those clicks simply passing on buying memberships? I try to buy skim traffic in my niche, but if you buy wide spread blanket traffic covering all the niches, the odds go way down of making a sale.
I feel if a man is looking at bondage and gets pulled away by clicking on a bondage thumb that goes to a teen site, he is going to quickly click away, cause he wants to get off on bondage.
I don't think the sites listed are bringing in bad traffic, in fact, I don't think there is such a thing as bad traffic at all. Only traffic that doesn't belong to your particular site's niche.
also, if your traffic is all coming from India, that's a whole other story. But I think this applies to the vast majority of buying countries. Focus in on your niche and sales will roll in.