http://www.shadowconsumer.com/2007/07/10/the-power-of-virtual-worlds-siemens-global-web-conference-notes-on-trend-watching-participatory-culture-and-attention-economy/ Metaverses, Synthetic Worlds, Business, Education, Avatars, and Virtual Economics Sat, 17 May 2008 22:42:58 +0000 http://wordpress.org/?v=2.1.2