Comcast Corp. (NASDAQ:CMCSA) is aggressively exploiting small and mid-sized (SMB) business opportunities. The largest cable MSO in the U.S. is currently offering metro Ethernet services in 20 major U.S. markets and is expected to offer the services in most of its point-of-presences by the end of 2011. Leveraging on the DOCSIS 3.0 platform, Comcast offers [...]