I have yet to run:
'clive -f best http://www.youtube.com/watch?v=foo' and not get a WebM version of the video.
I think that one of the major reasons why you don't see more WebM by default is by the technical limitations of HTML5 versus Flash for the purposes of overlays and such things for adverts, although I could easily be mistaken.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds