Something I couldn't find is support for SSL. That's key for CDN services.
I would definitely like to use a CDN with SSL sites. I am happy for the domain to be amazon's (or cloudfront, whatever) signed with their cert, I just don't want the browser security to be broken by having non-SSL content on the page.
Is there something wrong with this?
FAIL (Because of your reply tone, please try to be more civilized next time, shame on your up-voters too.)
If CloudShare used its own "this is Amazon.com's Cloudshare Service" certificate then it might be okay, except (1) they would be using it to sign content that they haven't verified the authenticity of, which is misleading (like notarizing something without any authentication), and (2) you almost always need to mix those static assets with dynamic assets or HTML forms and that all has to happen on the same domain--the domain that receives the POST requests, not the CDN's domain--in order for things to work reliably.
As for tone: the tone with which I wrote my reply is apparently not the same as the tone with which you read it.
Not everyone is interested in making sure your feelings don't get hurt on the internet. The sooner you realize that, the better off you'll be.
FWIW, I always found dealing with Akamai and HTTPS a bear.
The details vary significantly on each scenario. But as a global service I think Amazon will eventually have to add SSL, IMHO.