People come and go all the time. It's usual for the board to weed out those who aren't really interested for the long term, and leave after a short period of time after they've realized there's not much that interests them after initially discovering the board for whatever reason they originally became a member for.
Me, I have a lot of personal things going on recently, but I do pop in once in a while. Once I'm in a better position to relax in life, I'll probably be more active. I haven't had time for video games and I find myself less attracted to them now than ever which I never thought would happen. But there are things in the game industry today that really don't appeal to me. I've ranted about this before so I'll leave it at that.
It's nice to see a new member though.