CSS3 transform has had support for skew() for quite awhile, allowing us to do cool things like rotate and manipulate objects that would otherwise just be boxes.<p>skew() has been replaced with skewX() and skewY() due to some confusion over how skew() works. That's fine - CSS3 is still a work in progress. But Firefox intentionally yanking support for such a major feature, that large portions of the internet rely on, seems like a very shortsighted decision to me.<p>Interesting fact: css3generator.com is now broken on Firefox due to this.