Smutty is a pinned porn website that allows users to publish images on the net that are worth sharing. It basically functions like Pintrest, only instead of wedding ideas and travel tips, you're getting dicks and asses. Note that Smutty isn't actually devoted to gay content, but the gay hashtag is pretty easy to suss out and doesn't appear to have any material leaking in that isn't directly related to this niche.
The site has a relatively attractive theme and updates daily. Plenty of amateur users put their own material out there on smutty and of course, if you think you'd like to share your gay antics with the world, you're more than able to do exactly the same thing.
While it might not be the most active community or gay pin porn site, it still has quite a bit of content. It's just a shame that so many sites use it as an advertising platform.