They are allowed no entrance consoles and one exit console. Typically the quality of traffic is much better than regular circle jerk sites. CJ2 Webmaster will only trade with other CJ2 sites and possible a few TGP sites. Revenue is generated from banner ads and dialers, and some CJ2 webmasters sell their exit traffic to traffic brokers also. They typically have no exit popups and get good click ratios because they have a lot of content links.
Revenue is generated from banner ads and relies heavily from bookmark surfers.
Well, in studying them I have noticed that CJ sites typically have little or no content. A surfer getting trapped in a circle of CJ sites would get frustrated on the things that he had to go through to get some free porn. While surfing one CJ site after another, those paysite banners would seem to get more appealing just to get rid of the hassle of searching through a mess of browsers for some pics. This theory is an actual fact. While TGP s on the other hand are dishing out gallery after gallery of free pics and making it as easy as possible for the surfer to see it.