Adultstaffing is OK. I wouldn't start a parade in their honor, but we used to get some decent traffic from them.
SexyJobs.com is NOT OK. They ripped a request for writers off of our website and used it as an ad for hire. Of course we were only looking for webmasters in the adult industry to write articles about the industry - through their site we got erotic story writers, mainstream guys and a bunch of other stuff we didn't need - and didn't ASK for. I requested that the info be removed from their site over a dozen times until it was finally removed.
So that's AdultStaffing YES - SexyJobs NO.