Remember NetZero? Today the company announced that it's launching NetZero 4G Mobile Broadband, a wireless service rolling out in 80 US cities and offering value-priced monthly data plans without activation fees, contracts, commitments or overage charges. Customers can chose between two levels of service -- Lightspeed (up to 1Mbps down / 384Kbps up) to conserve data and Warpspeed (up to 10Mbps down / 1.5Mbps up) for maximum performance -- and can switch back and forth by simply logging into NetZero's website (this can take up to 15 minutes). Five monthly data plans are available: Free,
