One of the issues which seems to be missing from the debate is the nature of addressing. A key benefit of Grid and High-performance computing is the idea of global addressing of files and this seems a major drive forward for Cloud. Imagine if files are not locked to a server (i.e by a URL where the first part is a server – http://www.bbc.co.uk for example), but instead can reside anywhere and be addressed easily from anywhere. Why is this important? Because files live longer than the servers they reside on, and may not remain in the same place/country.