In our coverage of voice over IP (VOIP), we saw that VOIP sales passed traditional business PBX sales in 2003. VOIP is making inroads into the home. A recent Instat report states that as of the fourth quarter 2006, more than 10.6 million US households (9%) have at least one active VoIP user. That is up from approximately 9 million households at the end of the third quarter. It seems inevitable that eventually, person-to-person voice will be just another Internet service. Do you use VOIP? If so, do you also have a traditional land-line or cellular phone?