This issue has been discussed to death on the World of Warcraft forums. If we change our stance regarding multi-boxing, you’ll know it.
Daxxarri – Community Manager 12/5/2012
The decision to allow multiboxing has much to do with a person’s ability to be registered to multiple accounts. If we did not allow it, you would only be able to have one World of Warcraft account, ever. That would cause a number of complications that we sometimes still see today, due to a misunderstanding of our policies, but the issue would be exacerbated greatly if we were to limit things to a single license per user.
Once the determination was made the allow a person to have multiple WoW licenses registered to a single Battle.net or even multiple licenses under the same name, how many becomes entirely irrelevant.Two, ten or thirty, or more, the rules still apply. As long as the person registered to the account is the one in direct control of those characters, it is not against our policies to do so.
Vrakthris – Support Forum Agent 6/29/2012
Tom Chilton: [Laughs] Well, we actually are perfectly content to endorse multi-boxing to some reasonable degree. If a person wants to go out and buy a second account and power-level themselves, we’re okay with that.
Sources: https://us.battle.net/forums/en/wow/topic/8156016099
(This one has really good formatting)
This post is from support
Is Multiboxing Okay?
Updated: 10 months ago
Article ID: 11704
Relevant Games:
Common Problems
I’m worried my account will be actioned for multiboxing
Multiboxing, or playing multiple World of Warcraft accounts at once, is not a violation of our Terms of Use. We do not actively support multiboxing tools. For questions about setting up or running multiboxing you will need to refer to third-party sites such as WoW Wikki.