This i the only forum that I have been on for more than a few months. I usually join forums, post for a while, then forget about them.
I think people here are a lot friendlier than most places. Even though we have a lot of members, the actual portion of those who are active is just small enough where it is easy to make friends and know each other, but big enough where its not the same 5 people desperately trying to keep the forum going. When forums have so many members that you can't get to know people, it makes you feel...I dunno. I'm on a pokemon forum which I haven't posted in for a while, but that forum as so many active members I feel like when I post, I'm not really contributing anything.