My credit card is getting charged twicely evevy month as I pay for both of the accounts currently. Brother's account is abandoned by him, and he doesn't play WoW anymore, hasn't played for months. He bought TBC&WotLK back in the days he used to play, and upgraded his account to WotLK. What's so illegal here?
And beside all that, we still live in the same house, and we're using same router, so the IP change is so small, if Blizzard ever bothers to check our cases, what could they do? It's not a power-level service for my brother.