The Unofficial Microsoft Weblog points to an interview with Michael Robertson on engadget that divulges some information that I have not heard anywhere. Robertson is the founder of mp3.com and Linspire and his latest venture is SIPphone which puts him head to head with Skype/eBay. During the interview he informs the listeners that Skype uses individual’s PCs to route other people’s Skype calls. This may be one reason that enterprises are not friendly with Skype. I wonder if this has anything to do with variable Skype quality during long calls, I have been bit by this a lot.