Traffic is basically the commodity of people! When adult webmasters say that their site has lots of 'traffic', they really mean that they have lots of people coming to visit it. An adult webmaster has to learn how to get traffic to their site, and to pass it on to a sponsor (or some other place where that traffic can make them money). Traffic is the life-blood of any adult website. You could have the world's BEST porn site, but without traffic, it will not be successful.