Thanks to Blizzard's new Battle.net account system, it is now possible to change the last name of the account holder on any account.

Here's How:

When you create a new Battle.net account, Blizzard asks for your name.

You can give whatever name you like, and then merge the Battle.net account with an existing WoW account.

The first and last name of the WoW account will be changed to the first and last name of the Battle.net account.

http://www.battle.net/

Why:

You can transfer characters from bought accounts to your own account and keep your accounts 100% safe from recalling by the original owners.

So far this works with US accounts only, but in the EU this feature is coming soon.

This guide is Originally from mmogoldservice DOT com.

If You Want to Know More Details about it, please check out the link below:

http://www.mmogoldservice.com/wow-cheat-how-to-make-bought-accts-safe-from-recall-guideitem.html