on my blog, visitors can comment in video.  isn't that awesome?  i use Disqus, which comes "bundled" with tumblr.  i believe the video functionality is powered by seesmic .  mashable is running Disqus commenting system too.  so, one can leave video comments there.

u know what's next: "when u guys gonna start video commenting?"  i dig fast company.  look forward to seeing what u guys do with this technology.

sergi bosch