I am looking to add a forum for one of the niche services I run. It will run on its own domain. I wanted to find out which are the best respected forum software and what I should look out for? Because I use Wordpress on so many of my sites, I have been looking at bbpress. However, I don't know if its any good? Has anyone on here used it? The other one I keep hearing about is phpbb. Any advice is welcome. Thanks.