As a developer, I'm encouraged when I see projects like CacheFile.net. Yahoo was the first to start hosting their YUI files. Shortly there after, Dojo followed with AOL's support. Until CacheFile.net these were the only two libraries available on CDN's. Now all of them are available. All of that said, I am slightly concerned that the project will run out of a budget quickly, unless a major sponsor (come on Amazon, here's a great opportunity) steps forward. I'm interested to see who this develops.