@Jon z: Yep, minifying the JS will definitely help and I do mention that using a CDN version of these files would also help make the payload less bulky and make use of cached files.
Regarding my spam test, I would presume the temperature of ice is the same in both northern and southern hemispheres? ;) (I'm guessing you misread that as "Is *it* hot or cold?" – I can see how that would be dumb!)
Thanks for your comment!