@electronic{www.chriskoerner.at,
   title       = {Understanding the motivation behind tagging (PDF)}, 
   url         = {http://www.chriskoerner.at/poster.pdf},
   biburl      = {https://puma.uni-kassel.de/url/bb77b13aed0ac678731c9b2b2a6c373b/benz},
   keywords    = {christian_koerner tu_graz tagging motivation poster},
   added-at    = {2011-02-04T16:08:17.000+0100},
   description = {},
   interhash   = {bb77b13aed0ac678731c9b2b2a6c373b}, 
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}

@electronic{socialposter.com,
   title       = {Social bookmarking services poster and community websites submitter: digg.com reddit.com netscape.com Del.icio.us Stumbleupon.com etc.}, 
   url         = {http://socialposter.com/},
   biburl      = {https://puma.uni-kassel.de/url/886c3f82efc3c20e53f3ae746a5d58c3/hotho},
   keywords    = {tools social folksonomy bookmarking poster},
   added-at    = {2007-04-23T13:22:40.000+0200},
   description = {},
   interhash   = {886c3f82efc3c20e53f3ae746a5d58c3}, 
   intrahash   = {886c3f82efc3c20e53f3ae746a5d58c3}
}