In the world of PHP-based forums, there's a few out there that stand out from the crowd. One of the ones that has had a good following (despite the initial version not being written in PHP - heh) has been YaBB - and SitePoint has an interview with one of the members that rewrote this popular Perl script to PHP, Jeff Lewis.

YaBB -- an acronym for "Yet Another Bulletin Board" -- was developed in July, 2000 by a programmer named Zef Hemel, and was one of the first free Perl based BB scripts. The original YaBB team benefited from the skills of several experienced programmers, including Christian Land and Matt Mecham. Matt later went on to write his own script, Ikonboard, and now leads the team for Ibforums.

There's a few differences between the two versions, mostly in the way that the site works, but it still has that YaBB feel to it - it just costs less (free). This interview covers most of the bases about this new version, including a brief history of YaBB, the current community, and what the future holds for this ever-growing forum community.