Lots of fake female profiles exist on those websites to attract customers in order to enlarge the database itself so they can say that they have millions of users. On one hand, there are the free classified sex ad sites and on the other hand, there are the paid-for sites. There are many more NSA sites to get the ads. We analyzed afterwards the number of illicit encounters they have. You have to be persistent, follow up with more emails. Try EroticAds For Free. The top adult classified sites Here, we tested and ranked the best sex classified sites for you.