I'd recommend using something like http://css3please.com to generate the CSS for all browsers. Currently it's not really Tilt-Shift Using CSS, but rather Tilt-Shift in WebKit, due to the prefixes used, even though most or all of the properties you use are supported in other browsers as well.
I understand that that may have been a stupid thing to think, but I still feel a bit disappointed.
Still cool though.