There are other popular adult webmaster forums, but gfy.com is the largest one on the Internet. I'm not going to mention other adult webmaster forums on gfy.com, because it's against gfy rules.
For porn watching,
http://www.freeones.com sure has a huge list of porn to watch.
Lately, a lot of the porn tube sites offer long high quality videos to watch. More porn tubes are coming out right now that feature lots of content.