I've always had this sneaking suspicion that Microsoft bought Skype solely under the direction of the government so that it could be centrally administered and monitored by a vendor that is willing to do the job. There certainly has never been a business case for it that would support the obscene valuation even the first time around. I usually see about 20m users logged in and most of them are probably not active let alone terminating calls to a telco so they represent zero revenue.