ソーシャルブックマーク
↑ Golder, Scott; Huberman, Bernardo A. (2006), “Usage Patterns of Collaborative Tagging Systems”, Journal of Information Science 32 (2): 198-208, doi:10.1177/0165551506062337, http://www.hpl.hp.com/research/idl/papers/tags/
↑ Ben Lund, Tony Hammond, Martin Flack and Timo Hannay: Social Bookmarking Tools(II): A Case Study - Connotea In: D-Lib Magazine 11, Nr. 4, 2005
↑ The Scout Report -- September 17, 1999
↑ Extras - itList and Other Bookmark Managers by LaJean Humphries, January 17, 2000
↑ "Livewire: Putting Your Bookmarks on the Web" by Michelle V. Rafter, December 8, 1999(Reuters)
↑ "Net surfers can backtrack with Backflip", December 3, 1999, CNET News
↑ "Web Services Offer Solutions to Bookmark Overload" by Julia Lawlor, July 13, 2000, New York Times
↑ "New Web Service Offers Portable Bookmark Lists" by Ian Austen, November 11, 1999, New York Times
↑ "Backflip Lets Web Users Store and Share Bookmarks" by Ian Austen, April 6, 2000, New York Times
↑ "Someday, We'll All Backflip" by Andrew Goodman, May 23, 2000
↑ "About Backflip"
↑ "Getting it Right" by Ari Paparo, December 10, 2005
↑ Mathes, A., Folksonomies - Cooperative Classification and Communication Through Shared Metadata.