$pread Magazine, a trade publication for sex workers, is open to submissions. You'll find details at their submissions page. Compensation is exposure -- however, they just posted this notice:
"What do you think of the latest issue of $pread? If there was an article
that got you laughing, made you angry, or piqued your interest, we want to
know! Write a letter that we print in our next issue and get a free
subscription for yourself or a friend or a free renewal (for existing
subscribers). Send your submissions (250 words or less) to
email@example.com no later than next Sunday, February 20th."
Persons interested in this offer should be very familiar with the publication prior to submitting anything!