Forums are one of the best ways to access porn if you're the interactive type. If you like to chat and comment, share or talk with other people who like the same kinda porn that you do, a forum might be the way to go.
Int Porn is a forum run on the PHP BB platform so it's a well known format. The site loads with a number of different boards to choose from like Adult Movies and XXX Pictures where there are sub-categories. There's even speciality forums like Anime/Hentai and Gay Porn.
In order to post replies, start your own topics or view the site, ideally you need to sign up for a free account. This is really easy to do. Usually, these types of sites show how many active members there are but for some reason this one doesn't.