LinkedIn are adding video as a media type to their network. With additional information about who watched the videos and for how long. 

This is a very sensible addition to the network and gathering additional stats sits comfortably alongside SlideShare as a reason to publish to LinkedIn, instead of (or at least as well as) YouTube. 

It'll be interesting to see whether this is primarily a User-Generated-Content play or simply another lucrative advertising medium. Either way, LinkedIn clearly believe that video will continue to grow as a Business-to-Business medium.