Nostalrius Begins - Quality wow vanilla realm (1.12)

Is betting allowed? Mainly I want to advertise a legitmate respectable duel bets, but obviously I wouldn't if its a bannable offense. OR is betting allowed at all for that matters as in rolls.

i think its allowed, you just cant advertise it
so for example you can bet with your guild, but not advertise in trade chat
not sure though

One guy was spamming roll bets in stormwind and he was told to stop it.