The only one I knew of, the guy doesn't seem to be adding sites any more. I wanted to submit to him again, but not sure now. Take your chance.
http://www.adultblogresource.com/submitter/
On his board some are saying they are getting accepted, some not. I've just submitted today and waiting to see.
Here is another:
http://www.adultwebmastergroup.com/submitter/index.php