Public cam sex rooms
This is enforced through filter technology, and a team of moderators.
Start chatting right now and you won't ever want to leave!
It works best in the evenings (US eastern Standard time to Pacific time), and at weekends.
It has a no-nudity policy -though this is not very well moderated at times- and it will bounce you to the ‘unmoderated’ section if you get banned, where the ratio of girls to guys is far, far worse (1 in 50 to 1 in 100 at times).
Try the ‘Girls Watching Guys on Cam’ chat room for best chances of success, though some of the other chat rooms will work equally well.
Granted, there might not be as many girls on there as there are on some of the other sites mentioned here (apparently, Adult Friend Finder has a 16 to one male to female ratio), but given the nature of the site, you can get from chatting to sex much faster than with any of the other chatrooms below.
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To get unbanned, you will either need to wait a couple of weeks, or reset your dynamic IP address if you have one.