Business broadband wireless firm TowerStream adds antennas to Empire State Building: Steve Stroh reports that TowerStream now says it has nearly 100 percent availability in New York City for its service guarantee backed broadband wireless service. TowerStream has made a name for itself as a T-1 or faster replacement with fast rollout. In New York, this is an especially appealing offering, where aging facilities and other factors can produce long delays for high-speed business-grade data lines. TowerStream is not a Wi-Fi company, as Steve notes; they're using technology designed for this task, but are often bringing backhaul to Wi-Fi hotspots.