I think you are a lot like me in that you always find it a real inconvenience to always go out and download the latest source, bring it into your development project, and include it in all of your files. I ALWAYS have different projects using different versions of prototype!
You probably also hate that it takes forever to load all of these toolkits in your webpages. They are so useful, you can't really design without them, but they increase your page load time a lot.
Well, there are others like you out there, and a good thing that some of them work at google.
So you may be wondering if this is hard to use. Not at all. Simply include the Google AJAX Libraries API source file, and use google.load. Here is an example.
// Load jQuery
I really think Google is on to something here and I hope it catches on!