http://www.thestatistician.com/12.html
I haven't sent that much mature traffic (only a few hundred hits). But the statistician seems to do well. I don't really have any mature pages yet, so most of these hits actually came from one of my teen site listings of other sites.
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TopBucks.com - Converting at better than 1:130
David Lace Content - Highest Quality Teen Content
ConversionCash.com - Make Money off your WebTV Traffic