Just Us Boys is one of the most popular and populated porn forums on the Internet today. It has been around for a number of years and since its inception, has built up quite a database of porn and posts. There are currently over 6.2 million posts in 180,000 threads with all of the contributions coming from the near 100,000 members that have signed up to the site. Suffice to say that where numbers are concerned, this is one of the biggest places on the Internet for gay porn sharing.
The site is broken down into two categories: SFW and NSFW areas. You're going to find amateur videos, erotic stories, pictures of daddies and pretty much everything else you'd want from a jerking off perspective alongside a place to discuss sports, current events, health and many other subjects relevant to the gay experience. Just Us Boys also has regular meetups if you want to get together with users of the site.
This place is a great community and for my money, the go-to forum if you're looking to explore your gay horizons.