If you've been paying even a slight bit of attention to carriers over the past year and change, you'd know that a number of 'em are resorting to citywide WiFi networks in order to relieve some of the stress being placed on their 3G networks. It's definitely a viable solution for a problem that requires oodles to time (and far too many signatures) to plant new cell sites, but there's a looming issue: compatibility. Naturally, the Wi-Fi Alliance is all over it, today launching an initiative to transform the user