Redditors do love themselves a little bit of BDSM and if you happen to be of the cock and bum variety (which I'm guessing you are, I mean, you're on My Gay Sites!) then this subreddit is a good place for you to hone in on the material you're after.
/r/GayKink, as the name rightly suggests, brings you images and videos of guys going at it in a kinky fashion. There are no rules in regard to the level of taboo allowed (just so long as the Admins of the site doesn't have any rules against it) and you're going to see cum enemas, chastity, bondage, edging, struggle fucking and plenty of other fetishes mixed in between.
Gay Kink has just over 5,500 readers and to give you a rough idea of how regularly updates, you can expect to find 50 new posts submitted every week. Content ranges from professional porn through to amateur submissions by users of the site. There are lots of tags too, so if you want to see original content, GIFs, personals or videos you can get down to those without an issue.