Photograph from the Web 2.0 Expo SF 2008 , co-presented by O'Reilly Media and TechWeb. Photograph copyright James Duncan Davidson. Editorial and blog use in articles about Web 2.0 Expo SF 2008, as well as personal and non-commercial use, is permitted with attribution alongside the image and a link back to this page. All other rights reserved. Please contact via email to inquire about licensing for other usages.