when i saw cumkaraoke the first time, i noticed the similarities in the designs. But it's not that a complete clone site, similar though. But i would bet that whoever designed cumkaraoke.com definitely was very familiar with the design of suicidegirls.com.
there was an article in Wired about a year ago about SuicideGirls, the girl who owns it definitely doesn't want to be associated with porn sites and she tried very hard, too hard in my opinion, to get the idea across that she wasn't making much money and it's not about the money. Admit it honey, you're a capitalist pig using those girls just like everybody else. You wanna be some grunged out struggling artiste then don't charge any membership, don't sell your t-shirts and merchandise like. I'm sure a Suicide Girls cartoon show, comic book and movie is in the works.