Yes, it's frustrating how this is being passed around uncritically as an example of the wonder of "HTML5", when it really just demonstrates you can do some fun

Yes, it's frustrating how this is being passed around uncritically as an example of the wonder of "HTML5", when it really just demonstrates you can do some fun things with plain old JavaScript, with all the inherent problems and arguably worse performance than Flash. It's also pretty grating to see "CSS3 Multi-background" being listed as a "feature" of HTML5. Nice bit of marketing for IE9, though.