Can One Merchant Account Run Multiple Websites?

Merchant services is one of the most confusing parts of running an online business.  Right now, I find myself asking “Can one merchant services account run multiple websites?”  I have done some research and found a few options.

If you have a generic business name, such as “Internet Orders” you may be able to set up multiple websites in different niches using one merchant account.  Unfortunately most merchant services providers that I talked to, including Wells Fargo merchant services, requires exactly one merchant services account per website.

Irritating…. Though I wonder if you can have multiple merchant services accounts without having to pay the monthly fee again?