I would agree with gaystoryman, basschick, and chadknowslaw. If something happened to one of those accounts, the bank might not differientate between the other accounts.

One story that I heard from a merchant when he was using B of A. He had a lot of chargebacks on his merchant account (thru B of A). So B of A shut down his merchant account as well as his checking account. And it was much more difficult for him to open up a new checking account than for us to open a new merchant account.