Clouds and Roaming
Clouds can offer many services to its users, such as access to any information or service at any time, anywhere, no matter what device they are using.
However, internationally on the move mobile users encounter a problem: the high cost of roaming connections. Being in a foreign country, can not do to depend on wireless connections or being exposed to the risk of paying a high cost for the connection.
For this reason, I think that roaming costs is another factor to be considered when talking about the cloud on the move.