Here is the video of the keynote speaker, Ben Rockwood of Joyent, talking about “Storage in the Cloud” at the OpenSolaris Storage Summit on Sept 21, 2008.  Warning it is a pretty long video but worth checking out.

http://blogs.sun.com/video/entry/open_storage_summit_ben_rockwood

A couple items in the video resonated with us.

The first was ~8min in he tells of how they found that PayPal was using their cloud for quick development.  This is very much in line with our recommendations on the use of the cloud for enterprise class applications http://venturebeat.com/2008/10/13/the-cloud-isnt-for-everyone/

The second comment was ~12min in where he talks about how flaky customers can be and that you only get on shot with most of them. We completely agree with this and your architecture must scale on demand or you might lose customers permanently.