As noted by others here, CSS3 style columns are supported in Firefox with a -moz prefix. In my opinion the implementation is barely usable though, because if you have too much text to fit onto the page they overflow off the bottom of the page instead of off the right hand side.

I seriously wonder if the CSS standards group has any loud voices from anything other than a static-content background because everything makes perfect sense if and only if you know exactly what will be on the page.