Now Im just wandering in here and havnt read the entire deal, but if what Dean C says is the only reason why it wasnt allowed, then I call that L-A-M-E.
(Note that the following reasons are my own opinions. They are not biased by any previous opinions I might have read earlier or whatever else)
* You cant stop warez. I see vB 3.0.3 on several sites, nullified and spyfixed. Omfgz you shouldnt let people have access to vB files, php experts are able to offer it for free! Letting us see the files promote warez!
* vB in itself as a forum software can be used to promote warez. So fooking what if someone uses vB to discuss warez? Ive seen emulation sites using vB, and do they get busted by Jelsoft? No. Because in relation to what FleaBag said, the admin can just put in their agreement that people "read" and agree to at register summit like "Due to the realtime nature of our forums we cannot be held responsible for any illegal activities going on on our forums", and it holds as much water as Jelsoft's.
* Every single god damn mod out there can in some twisted way, if you bend and turn it enough, be said to promote warez.
People can shout about warez. (Link's Shoutbox owns btw

)
People can rip flash games and play em. thats warez
People can attach warez to PMs.
People can chat about warez in an RPG battle
People can post warez new in a portal
etc etc etc