Social Bookmarking Links

Del.icio.us
http://del.icio.us/

Furl
http://www.furl.net/

CiteULike (created for research)
http://www.citeulike.org/

Libraries using Del.icio.us
http://angelacw.wordpress.com/2007/06/04/delicious-libraries/

Carleton College and Del.icio.us
http://apps.carleton.edu/campus/library/help/help/liaisons/ijastram/imageRSS/

Stanford University Libraries: Subject guide del.icio.us “tag cloud”
https://www.stanford.edu/group/ic/cgi-bin/drupal/delicous

PennTags
http://tags.library.upenn.edu/

LibraryThing
http://www.librarything.com/

flickr
http://www.flickr.com/