And Comcast makes three. Two years after Cablevision started rolling out hotspots in the Big Apple and less than a month after Time Warner joined it, Comcast has gotten buddy-buddy with the pair in their efforts to blanket New York City with WiFi. If you subscribe to any one of their data services, you now get free access to all three, and can use your existing login at any Optimum, Time Warner or Xfinity hotspot across the city. In a press release, Cablevision executive John Bickham said the agreement might be "the first of many." We wonder if by banding together, cable might one day compete with the t