Microsoft is about to launch a giant media blitz for Windows 8, and it wants to guarantee that even those of us heads-down in our laptops and smartphones take notice. It's sponsoring Boingo's WiFi, making it free at popular locations in New York City and San Francisco through the holidays to pitch both its new OS and the Windows Store. The San Francisco locations are already active and mostly cover signature locations such as Fisherman's Wharf and Union Square, but Microsoft is going all-out for the New York City campaign starting November 1st