http://www.panoramio.com/

http://www.ask500people.com/

http://www.dipity.com/

http://www.flickr.com/

http://delicious.com/

http://www.footnote.com/

http://www.gliffy.com/

http://www.iconfinder.net/

http://www.wolframalpha.com/

http://www.wepapers.com/

http://thoora.com/

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