after reading all this, i went to cand.com to see if that site blind links. they've been sending my galleries a lot of hits. it took me 4 gallery clicks to see a tgp.

so i went to two others that send good hits - one seems to have no blind links and the other seems to also have skim set very low. a few they do have a few common sponsor galleries, but not too many.

why not go to your larger trades, click a few times and see how high their skim is?