Account name question

[sensenmann]

So my thread kinda got sidetracked / hijacked, so I figured I would make this more clear.

I have 3 B-Net accounts, with all the same last name on them (my own). Before the B-Net merger thing, the accounts had different last names.

What i want to know is, would it be ok to multi-box with the 3 accounts. They have my last name on them all, but if blizz looks at the original info, they will see they had different names. I just want to know if this would be against some blizz rule. Considering blizz allowed people to change the name on the account when it was merged to B-Net, I assumed it was a sort of grace period for people who made accounts for friends, and put names other than their own on the account.