Most ISPs' webspace is for personal use. ie family photos etc. If your looking to use it commercially, then if the bandwith gets out of hand you'll probably get shutdown. They do, however, look the other way especially with "small" business. Real estate agents, insurance agents, etc. I used one of my sites for coupons for my dry cleaning store. If your planning on doing ecommerce, you'll more than likely going to have to go dot.com.
My 100th. post!!
Bill