the essence of web 2.0http://cafe.themarker.com/image/85610/Fri, 20 Jul 2007 14:10:46 +0300Socialdex 2.1en60http://cafe.themarker.com/media/t/856/10/file_0_small.jpgthe essence of web 2.0http://cafe.themarker.com/image/85610/ErrorSun, 14 Apr 2267 16:18:40 +0200