Lots of sites also strip the "sub." part from the domain. I have no idea why they think this is a good idea, but a friend of mine does this and he's got at leas

Lots of sites also strip the "sub." part from the domain. I have no idea why they think this is a good idea, but a friend of mine does this and he's got at least ten companies in his main domain's alias table because they silently stripped the "sub." part.