Vbulletin just applied for a world wide trademark on "vbulletin" in December 2005. I actually owned vbulletin.ca and just signed the domain over to them. So be careful as I don't know how litigious they will be once the trademark is approved. They also have their own community (big forum) on vbulletin.com. Oops...sorry Canadian/mods. That was meant to be a PM. My bad.