Found another site posting my work without my knowledge or consent: http://www.pornobites.com/free-sex-stories/4184/sex-story/my-brothers-genie-bi-sexual-teen-sex-mind-control
Only this time, instead of it being posted without credit at all, it's being credited to someone called "David". My name is not David. It's Jack. And regardless, I did not give this site permission to host any part of my work, with or without credit.
I've been trying to find a contact e-mail for those running the site but I can't find one. I do advise all authors to regularly Google your works' titles. You never know where it might have ended up.
Without an e-mail to contact them with, I'm settling for posting a story that simply consists of me asking them to remove my work. That should get their attention.
Edit: Oh wait, turns out they've also got Breaking in Ones New Self up there too.