BDSM Profitable traffic comes from
BDSM for All
http://www.bdsmclicks.com/list.html
which is ranked #1 by Sextracker, you can check the stats here:
http://ranks.sextracker.com/spn.html?cat=BDSM&cls=ranks
Paid gallery spots, banner spots, toplists traffic, good quality traffic.
#1 Customer satisfaction and spots are renewed and renewed.