User blog comment:Seahorseruler/Upgrade to Firefox 4 Beta - View the Club Penguin Wiki in a better fashion/@comment-1903616-20100816023956/@comment-1297940-20100822110135

Too bad it's HTML 5 video support is utter garbage.

WebM and Ogg are the future of HTML 5 video, not a proprietary video codec that only restricts.