I get a lot of flack for including Ok Cupid in so many of my recommended reviews, likely because the site does seem to cater to folks looking for something outside of the mainstream.
When I asked a male friend of mine if they thought Craigslist deserved top ranking on my list of places to find a sexual encounter online, they loudly said, "Are you kidding?! Yea, it works." Almost everyone I've spoken to who has used CL to hookup has had success; those that failed to find what they sought were either rude, exceptionally picky, or ignored my tips below.: Focus on replying to ads rather than posting them, make sure you have a fantastic, recent and clear picture of your face (keep the junk pictures to yourself for now), and share this picture along with a personalized first reply - most gals can spot a copied and pasted response a mile away.
Make sure you post at least a few pictures of yourself; face pics definitely increase your chances of getting a reply (although you can limit to showing your face to 'friends' only).
Then, hit the groups in your geographical region that cater to singles, and post a note with what you're seeking.: You'll get bombarded here just for creating a profile, so make sure to keep your needs and desires up front for all to see.
For singles who want to meet new people, Date Hookup is the top choice!
Start meeting singles near you now, and don't let your wallet get in the way of finding love.