I have been trying to find a forum software I really like. I used phpbb for a few, but have not been all that happy. I tried Vanilla and like it overall, but it seems to have some issues, like for example with incompatible plug-ins and absent plug in’s it isn’t all that powerful. So I tried this comparison site http://www.forummatrix.org/. It is pretty good. It compares and contrasts between a number of the popular programs so that you can pick. I found mybb this way and it looks quite good so far.