There's a comic written by a dominatrix called Nic Buxom. The art style isn't super-sexy, but the subject matter is sometimes pretty good:

Discussing her job:
http://nicbuxom.blogspot.com/2010/08...se-answer.html

Torturing some balls with spike heels:
http://nicbuxom.blogspot.com/2010/05...etish-cbt.html

Discussing her favorite sports:
http://nicbuxom.blogspot.com/2010/03/athletics_13.html