A company whose operations are entirely or primarily internet-based, or more specifically a company whose business model would not be possible if the internet did not exist. Dotcoms often deliver all their services over an internet interface, but products might be delivered through traditional channels as well. Dotcoms are often divided into two categories: those that provide products and services for consumers (B2C) and those that provide products and services to other businesses (B2B).Many at-home businesses are "dot com" companies.
Top 10 Dot Com Companies ?
AOL.com ( America Online )