Video blogs for law firms

Am a little late to the party but I agree with Kevin O'Keefe from Lexblog again here regarding video blogs for law firms. The concept is seductive of course, and I'm hearing it raised more and more often lately, but in practice the devil is in the detail.
I'll offer one additional reason here Kevin doesn't -- you can't skim a vlog. Unlike written communication, if you are going to watch a video you have to be prepared to see it through to the end -- you never know when that important piece of information is going to drop.
So, if you're marketing to a time-poor audience, that makes using video a flawed approach I think.