%0 Conference Paper
%1 ames2007why
%A Ames, Morgan
%A Naaman, Mor
%B CHI '07: Proceedings of the SIGCHI conference on Human factors in computing systems
%C New York, NY, USA
%D 2007
%I ACM
%K tagging motivation
%P 971--980
%T Why we tag: motivations for annotation in mobile and online media
%U http://portal.acm.org/citation.cfm?doid=1240624.1240772
%X Why do people tag? Users have mostly avoided annotating media such as photos -- both in desktop and mobile environments -- despite the many potential uses for annotations, including recall and retrieval. We investigate the incentives for annotation in Flickr, a popular web-based photo-sharing system, and ZoneTag, a cameraphone photo capture and annotation tool that uploads images to Flickr. In Flickr, annotation (as textual tags) serves both personal and social purposes, increasing incentives for tagging and resulting in a relatively high number of annotations. ZoneTag, in turn, makes it easier to tag cameraphone photos that are uploaded to Flickr by allowing annotation and suggesting relevant tags immediately after capture.