This might ruin it for you, but it's an old Something Awful Forums in joke. The forum they're talking about here is the rules relaxed one where they allow flame wars and goatse

FYAD is the cool place to hang out. You can find most of the cool people there. In FYAD you can just chill and do whatever and totally relax. "Take it easy" is the FYAD motto, for example, that's how laid back it is there. Show up if you want to have a good time. Another good reason to show up is if you want to hang out with friends.

The joke specifically is that you should probably not post in FYAD if you're looking for a good time, Lol.

For better or for worse, a lot of SRS/Fempire/Just Post stuff is wholesomely repackaged Something Awful stuff. This includes the name Just Post itself. I'm not an original puppy