[LWN reports](http://lwn.net/Articles/292939) that the OGG Theora video format will be supported in Firefox 3.1. I believe this is a game-changing move on the web. It will make it easier and cheaper to distribute video that will render on any OS running Firefox (because there are no patent royalties to pay). It will catapult the Theora video format into the mainstream.
An LWN reader [pointed out](http://lwn.net/Articles/293076/) that Theora has traditionally lacked quality and performance compared to MPEG-4, but that it’s being remedied by the in-progress “Thusnelda” project.