@electronic{www.youtube.com,
   title       = {YouTube - Social Bookmarking in Plain English}, 
   url         = {http://www.youtube.com/watch?v=x66lV7GOcNU},
   biburl      = {https://puma.uni-kassel.de/url/8a706aca5e5f54150accd5aa0a795937/stumme},
   keywords    = {bookmarking folksonomies social tagging youtube},
   added-at    = {2008-04-29T15:55:46.000+0200},
   description = {},
   interhash   = {8a706aca5e5f54150accd5aa0a795937}, 
   intrahash   = {8a706aca5e5f54150accd5aa0a795937}
}

@electronic{www.everytrail.com,
   title       = {Everytrail - The GPS Travel Community}, 
   url         = {http://www.everytrail.com/},
   biburl      = {https://puma.uni-kassel.de/url/80eedd50019945ed3b1f6606a1f621f8/stumme},
   keywords    = {GPS bookmarking geo gps navigation social tagging travel},
   added-at    = {2007-07-23T15:07:25.000+0200},
   description = {},
   interhash   = {80eedd50019945ed3b1f6606a1f621f8}, 
   intrahash   = {80eedd50019945ed3b1f6606a1f621f8}
}

@electronic{www.ikoru.net,
   title       = {Ikoru}, 
   url         = {http://www.ikoru.net/ikoru/+/photo},
   biburl      = {https://puma.uni-kassel.de/url/6a50515409ed3d5f98996f167c5e638b/stumme},
   keywords    = {bookmarking folksonomy ikoru social tagging tagora},
   added-at    = {2007-07-23T15:02:07.000+0200},
   description = {},
   interhash   = {6a50515409ed3d5f98996f167c5e638b}, 
   intrahash   = {6a50515409ed3d5f98996f167c5e638b}
}

@electronic{www.bibsonomy.org,
   title       = {BibSonomy::home}, 
   url         = {http://www.bibsonomy.org/},
   biburl      = {https://puma.uni-kassel.de/url/d1bb7b3f6cafafa7b418f9f356ff2e83/stumme},
   keywords    = {social bookmarking BibSonomy},
   added-at    = {2006-05-05T14:23:28.000+0200},
   description = {},
   interhash   = {d1bb7b3f6cafafa7b418f9f356ff2e83}, 
   intrahash   = {d1bb7b3f6cafafa7b418f9f356ff2e83}
}