Cloud definition misses the point....

Here are the three criteria I have for determining whether something is a cloud service or not:

1. The service is accessible via a web browser (non-proprietary) or web services API.
2. There is zero capital expenditure required to get started.

3. You pay only for what you use as you use it.

4. http://broadcast.oreilly.com/2008/12/three-criteria-for-being-a-clo.html