Favourite Forum Software?

[AceInfinity]

My personal like is MyBB, simple and straight. But if you want professional forum, then vB rocks.
@BlackChaos mind taking a look of Digital Point forums and WarriorForum, they're far bigger than HF :-)

And also been around for years more than HF. WarriorForum back in 1997

Take a look at this as well lol: http://www.warriorforumsucks.com/

Ranked as the second search result RIGHT under WarriorForum on Google.