One thing you need to do in any forum is spread things out a bit, instead of just having forum as the category and having it like you do you need things split up like one section called forum discussion, personal sites, help, etc. Now I am not going to say anything about whether or not the forum is going to get visitors just a little tip on how to design a forum a little better. It is possible with phpbb, i've used it and one thing you need to be careful of is permissions, it's a trickey thing to get right and often you will need a few fake accounts to test it on.