I'm not entirely sure why so many people requested that we have a gay GIF porn site list, but I figured that it was better just to listen to my fans instead of arguing against them. For that reason, I headed on over to GIF Porn Tube and found that they had a section entirely devoted to gay material. There are just over 500 GIFs right now and new updates come in about once a day. The material is able to be sorted by date, rating and view count. I personally recommend sorting by rating, as to be honest, the material here is a little on the shoddy site.
I should mention that GIFs are slowly becoming a dated format for sending media over the Internet. HTML5 embeds are incredibly more efficient, such as GIFVs on Imgur and WebMs on 4chan. Alas, if you still want to check out some GIF content, there's a place for you over at GIF Porn Tube. Where will this place be in a few years? Who knows!