Ok for one, Im not saying you cant raf yourself and get away with it. Im saying it may be different for a multiboxer.
The reason i think they allow the creation of two accounts in the same name is simply because alot of fathers/mothers who have accounts and open them for their children would like to have their account in the fathers/mothers name as well. So sure, there wouldnt be a problem with that scenario.
However, If blizzard notices that someone has linked 4 accounts to their main to gain the benefit for something as obvious as multiboxing that points out your one person, why couldnt they decide to take it away?
Incase you have not noticed Blizzard has some pretty stupid rules. Here is a quote from an email I got from them today for a warning (warning because i had no previous offenses)
Now if you think for one second that they will take action on someone casting blizzard into a crowd a few time faster then they will take action on someone clearly gaining a huge advantage of a system thats already OP, then you have lost your mind.Account Action: Warning
Offenses: Harassment Policy Violation - Zone/Area Disruption
This category includes language and/or actions intended to disturb groups of players or areas of the world, such as:
* Disruption of player sponsored events or gatherings
* Excessive use of in-game sounds or visuals
* Excessively casting spells with noticeable effects in crowded areas
* Impeding or blocking access to an NPC, doodad, doorway, or any other area of the world that a player would normally be able to access
Whereas if they do take action on someone who doesnt feed their pet then sits in the AH and let it complain before someone taking advantage of RAF, then there is something going wrong on their end.