I was talking to somebody and they said they had an old vBulletin forum download. They said it was free when it was released and because its old.
I got confused so came here to see if it would be safe to use 'this old vBulletin forum' without a licence.. or to find out if there is any such thing as an old vBulletin forum which does not need a licence
They used to have a 'lite' version download available with limited features so you could test to make sure it was installable/etc. Looks like it has been discontinued for now though: http://www.vbulletin.com/download/