Hi. I have some 0,24 and 0,25$ clicks at my Parking company for adult parked sites. This company pay much more then others for plenty of keywords but I won't promote it here.
I just want to put link to NICE comparison of most used parking companies I found lately.
It doesn't have referral links, pop-ups nothing. It just describes these four parking companies and have STATS screenshots from different users with different portfolio on different parking companies.
Not a spam :D hope You find some good information there
http://domain-parking-comparison.blogspot.com