vBulletin got bought by Internet Brands in 2007. While vBulletin 4 was pretty good (after a lot of upgrades), vBulletin 5 is a buggy and somewhat disastrously u

vBulletin got bought by Internet Brands in 2007. While vBulletin 4 was pretty good (after a lot of upgrades), vBulletin 5 is a buggy and somewhat disastrously unpopular piece of software, with most of its users having gone to either XenForo (by the original dev team), Invision Power Board, or the various free products like phpBB, SMF, MyBB, Discourse, etc. So if you're after the 'best' forum solution now, your best bet is definitely not vBulletin anymore.