Now I am a bit late posting about this one, but I wanted it to be part of my web-log nevertheless. Agency.com hast been widely discussed in blogs in the last couple of days, because of a pitch-video the posted at YouTube instead of just sending it in:
And Coudal put up a very short response video, mainly because they are currently pitching for a competitor of subways.
Disregarding all the positive or negative chatter on the web about these two approaches, I think we will see a lot more of this kind of quarrel. In fact, many things that were written or vocal discusssions (at conferences, for example) will turn into video discussions, with platforms like YouTube feeding the viral long tail of the discussion.