Thanks, great information! There is another device on the market as well, a bit more expensive but much more portable - the Belkin skype wi-fi phone. It looks like a normal cell phone but is wi-fi (wi-fi only) and skype enabled. I recently used it in London and reduced my normal roaming fees to amost nothing.

http://www.amazon.com/Belkin-Wi-Fi-B.../dp/B000GTSEHQ