Comcast on Monday marked the launch of its own 4G Internet access in the form of High-Speed 2go [currently a sign-in page]. The service depends on Clearwire's WiMAX network and supplies peak real-world speeds of about 4Mbps downstream anywhere within the coverage range. Like service from Clearwire or Sprint, it's not locked to a particular location and can be had either for mobile use or else as
