AltMatch is an alternative dating site where you can find just about everything imaginable, yet the ads are understated and not overtly sexual, and the people seem real.
Definitely recommended if you are looking for someone who is perhaps not too far out on the edge, yet with the possibility of a wild side.
Alt.com is described as the world's largest BDSM/fetish alternative dating personals, with over 1,000,000 active members, and around 18,000 new members each week. They have articles, an advice line and fetish magazine, along with thousands of graphic photos of members.
From Womanline, the Lavalife site for women seeking women:
"She's cute, she's single, she's never dated your best friend.
Think she's hard to find? Meeting women in our exciting, safe environment makes it so much easier to connect."
There are three areas of interest here, Dating, Relationship, and Intimate Encounters. You can enter and browse photos and ads for free, and joining to create a profile is free.
This is a large site -- when we visited recently, 60,151 new women had joined within the past 10 days. Womanline is one of the best sites for lesbian online personals, or just satisfying your curiosity.
For gay personals, try Manline at Lavalife. Joining is free, but you can enter the site immediately to check things out without joining, to see if it appeals to you. There are three areas here, Dating, Relationships, and Sex. When we last checked this site, 41,032 guys had joined Manline in the last 10 days.
Another major gay personals site is Out Personals. They have more than 500,000 members, and shown below are just a few: