Voice and Internet communications while traveling are fraught with "gotchas" as road warriors try to wade through the minefield of price structures from cell phone carriers and Wi-Fi hotspot providers.
Roaming charges can be ridiculously expensive, especially when traveling overseas, and prices for Wi-Fi access at hotels, airports, and other public locations around the world are often very high. The rates I've ended up paying have ranged from just expensive (after spending over $20 for Wi-Fi access at the Charles de Gaulle airport in Paris) to the absurd (when Vodaphone charged me hundreds of dollars to use my Blackberry in Ireland to check e-mail and browse the Internet intermittingly for a week).
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