Just to inform you we conducted an initial investigation to assess how online videos may potentially be valuable in research publication.
We mentioned that this research is part of the FP7 EU-funded project ACUMEN on assessing Web indicators in research evaluation. You can find the preprint below.
Kayvan K., Thelwall. M & Abdoli, M. (in press, 2012). The role of online videos in research communication: A content analysis of YouTube
videos cited in academic publications, Journal of the American
Society of Information Science and Technology.