Gecko 1.8 (Firefox 2.0) and WebKit 522 (Safari 3.0) implemented support for CSS3 multi-column layout and according to Håkon Wium Lie who has worked on the CSS3 module we will likely see it supported in the next version of Opera which will likely be Opera 11.5. I'm very excited about this as it makes reading text much easier on liquid sites that aren't squashed down to 1024 width.
http://vimeo.com/15775937 [vimeo.com]
- John