I believe vbulletin is the best forum software, it looks the best and it has the best features. But that's just my opinion. If you take a look at some of the biggest discussion forums (most people online, most discussions and the most traffic), it seems that most of them are using vbulletin. I have been using phpbb for many years now, and that's only because it's free. I have ended up receiving tons of spam every single day, even though I have installed all sorts of spam filters. I am not sure how much spam you get with vbulletin, but when I visit different vbulletin powered forums, it seems that there are hardly any spam at all. Jens
What about the SEO aspect of it? I have read elsewhere that vbulletin is friendly to urls or something to that nature.
I am not sure if vbulletin is more seo friendly or not. There are tons of free hacks for phpbb, just visit phpbbhacks and you can find all sorts of seo friendly hacks: http://www.phpbbhacks.com/ Jens