Originally Posted by Kristian

Yes, vbulletin.

Is a forum a good idea? Depends on the site.

They can be a lot of work to run and establish. The good thing about the latest release of VB is you get lots of social web 2.0 features as standard (like friend adding, profile comments). You have the script-power to setup a fully-functioning community. But like I said it takes a lot of effort to run. The question : is all that time worthwhile?