Stunning, I'll admit, but this can't be an easy or lightweight solution to implement, I'd imagine. Kudos either way, there aren't too many things that immediately made me lean toward the screen like that.
I do about 10 million impressions a day, and the request to the server is a pretty consistent ~200ms, along with an async load that won't affect overall page load.
Have you tested this on some cheap, low-end, Chinese phones with the default browser?
> You consider 280k script lightweight? Wow.
They do not. :P