How does data roaming work on European carriers? For someone traveling from the US, there could be a significant cost to using data in another country. If Europe's prices are more sane, it might not be an issue.
At the moment data roaming in Europe is still a nightmare, most providers make you pay ridiculous fees when crossing a border. The EU commissioner for IT & Telco (Nellie Kroes) recently threatened with legislation if things didn't improve and now several providers started offering some kind or "Euro roaming" subscription.
