So the next time you present at a conference, instead of being confronted by a sea of faces looking at you, you may be phased by a sea of heads looking down at their laptops. laquo; Kjells blogg on March 1, 2009 @ 6:12 am Pingback by Pennsylvania » DEN Diigo Group Bookmarks 03/01/2009 on March 1, 2009 @ 7:35 am Pingback by AKA Riptide Furse » Blog Archive » Daily Links From The Arlington Public Schools