Folksonomy By thuridilla Feb 13, 2004 Flickr beta release 1 Jul 24, 2004 Folksonomy definition by Van Der Waal Folksonomy Mar 25, 2005 Yahoo acquires Flickr May 16, 2006 Flickr design and structural overhaul Dec 1, 2006 Increase of upload limits on free accounts Jan 16, 2008 Library of Congress Flickr pilot project launch