This presentation has been shown three times by Trent Mankelow from Optimal Usability: 23 February 2010 - Wellington 30 March 2010 - Wellington 21 April 2010 - Auckland You can see the video of this presentation in 3 parts at http://www.youtube.com/watch?v=GXitPLqQDxc http://www.youtube.com/watch?v=nj14MWheZ1o http://www.youtube.com/watch?v=o84IbnUhFDo