[quote='Madnuz',index.php?page=Thread&postID=85708# post85708]I was wondering, why would blizzard ban you if you play friends' teir accounts, but they don't when you play 4x your own account....[/quote]


Because account sharing is against the [url='http://www.worldofwarcraft.com/termsofuse.html']World of Warcraft Terms of Use.[/url]

Here is some reading material from past Dual-boxing.com discussions on why account sharing is bad:
http://dual-boxing.com/forums/index....4229#post24229
http://dual-boxing.com/forums/index....8169#post78169
http://dual-boxing.com/forums/index....5284#post75284
http://dual-boxing.com/forums/index....4121#post74121
http://dual-boxing.com/forums/index....2456#post82456
http://dual-boxing.com/forums/index....5734#post65734
http://dual-boxing.com/forums/index....0803#post80803
http://dual-boxing.com/forums/index....2893#post82893