@electronic{www.masternewmedia.org,
   title       = {Social Bookmarking Services And Tools: The Wisdom Of Crowds That Organizes The Web}, 
   url         = {http://www.masternewmedia.org/news/2006/12/01/social_bookmarking_services_and_tools.htm},
   biburl      = {https://puma.uni-kassel.de/url/b6f199ded06540580d1e7a4a78d35e0f/benz},
   keywords    = {Pick overview social_bookmarking},
   added-at    = {2011-05-03T23:23:07.000+0200},
   description = {Social Bookmarking Services And Tools: The Wisdom Of Crowds That Organizes The Web},
   interhash   = {b6f199ded06540580d1e7a4a78d35e0f}, 
   intrahash   = {b6f199ded06540580d1e7a4a78d35e0f}
}

@electronic{pinboard.in,
   title       = {Pinboard - antisocial bookmarking}, 
   url         = {http://pinboard.in/},
   biburl      = {https://puma.uni-kassel.de/url/f647277f54d87fea81a1d88fc26d56c2/benz},
   keywords    = {pinboard social_bookmarking},
   added-at    = {2011-02-04T16:06:53.000+0100},
   description = {},
   interhash   = {f647277f54d87fea81a1d88fc26d56c2}, 
   intrahash   = {f647277f54d87fea81a1d88fc26d56c2}
}