According to AccuStream iMedia Research , there was a 24.3% increase in professionally produced content on the web in 2008, mostly caused by broadcast companies joining the online publishing revolution.
David Hallerman from eMarketer reckons that "the sharp escalation of professional video content on the Web--mainly from TV networks--is creating a viable base for brand marketers".
Add to this the standardisation efforts of the IAB for in-stream and companion ad formats for video and you can foresee a lucrative new advertising market emerge around online video.