I've seen some arguments for using a CDN or not and other arguments on who (Google,Microsoft, etc.) is the best for hosting jQuery.
My question: Is it redundant to have multiple entities host jQuery? (in case one goes down)
Or, as an example, is it better for Google to host it and you also have your own library to fall back on?
I think either one would be fine. In addition, it's good practice have your code fall-back to local (on your own server) copy of jQuery.