What does the forum think of defining ecommerce as anything that happens through a browser (IE, Firefox, Mozilla, etc.) where, because of a commercial transaction, a product is shipped to a physical address?
sgg24, that's a rather strange definition of ecommerce. You want to exclude for example entire sector of flight tickets sold by airlines on their websites, just because there is no product shipped to a physical address?
Ecommerce is a very generic term. Unless you define it well or limit it you will not get any meaningful answer, because it simply does not exist.