What's social bookmarking? Another great video explanation

It's no secret that I'm a fan of social bookmarking services, especially del.icio.us.  But these social applications are sometimes difficult to explain.  Lee Lefever has done another of his "in plain English" videos.  This time he explaining how del.icio.us works, which I've written about here and here. 

If you're already a del.icio.us user and a geekish missionary, add me to your network!  I'm here!  I'd love to better leverage the social aspect of our bookmarks!