The first time I saw this image, I was scrolling down the page, which is one of the most universal things that anyone anywhere can do whilst browsing a site. I immediately "got" it. I decided to see what would happen with a little bit of CSS3 simple animation applied on a tiled background. And here we are.
Since CSS animation of this sort can be a resource hog, Chrome is the only browser that I notice a more or less seamless appearance on, though the scanline 'artifacting' of other browsers kind of looks cool in its own right.