adult websites, good or fake?

Are Adult Dating Sites worth it, or are they just a money trap made for men and women? How many men/women fell into the sex-trap of AdultFriendFinder? How many real persons are online indeed? Some people are saying that they have mostly fake ads and you get fake e-mails from make-believe people in your area when you sign up. Are some of these sites worth it or am I only going to waste my time and money? And if there are sites that are good and not fake, would you recommend one?