27. URL’s for sites mentioned: • http://www.ask500people.com/ • http://www dipity.com/ • http://delicious.com/ • http://www.stumbleupon.com/ • http://www.flickr.com/ • http://Twitter.com • http://quizlet.com/ • http://www.gliffy.com/ • http://www.docstoc.com • http://www.slideshare.net/ • http://docs.google.com • http://www.wepapers.com/ • http://www.footnote.com • http://www.wolframalpha.com/ • http://www.listphile.com/ • http://thoora.com/ • http://www.panoramio.com/ • http://www.bookrix.com/ • http://www.howstuffworks.com/ • http://www.iconfinder.com/Others: • http://www.freebase.com/ • http://www.evri.com