Should we implement proprietary Firefox CSS?

Question

With lots of talk and bickering among developers about how IE breaks standards, is it worth supporting mozilla and webkit CSS?

Examples

-moz-border-radius
-webkit-border-radius

Of course there are many more, but I just want to know everyone's thoughts.

Thanks

Answer 1

For IE, we were (are?) using proprietary features in order to eliminate rendering bugs. At least, in the case of FF and WebKit, we're using them to improve the design. It's progressive enhancement in this case. No one suffers if they have no border-radius feature, but we as developers get more satisfaction for using some CSS3 features. Our designs are more pleasing and W3C gets the feedback it needs in order to improve and then approve the CSS3 draft.