Just downloaded speedtest.net APP on my 822. Interesting results when connected to WiFi verses direct connection to VZW. Going to do more testing on my VZW connection as I am out and about today. I have a Samsung Network Extender from VZW at my house - not sure if that impacts the speeds (though download speeds were smokin').
Speedtest APP: Speedtest.net | Windows Phone Apps+Games Store (United States)
Speedtest Article: Official Speedtest.net App Now Available For Windows Phone 8 Devices | WMPoweruser
Speedtest APP: Speedtest.net | Windows Phone Apps+Games Store (United States)
Speedtest Article: Official Speedtest.net App Now Available For Windows Phone 8 Devices | WMPoweruser