@electronic{blog.nielsen.com,
   title       = {Nielsen: Global Faces and networked places (pdf)}, 
   url         = {http://blog.nielsen.com/nielsenwire/wp-content/uploads/2009/03/nielsen_globalfaces_mar09.pdf},
   biburl      = {https://puma.uni-kassel.de/url/a6285650262d544f92c4725c66f2f351/benz},
   keywords    = {nielsen nutzung pdf social_networks soziale_netzwerke studie study},
   added-at    = {2011-02-04T16:07:45.000+0100},
   description = {},
   interhash   = {a6285650262d544f92c4725c66f2f351}, 
   intrahash   = {a6285650262d544f92c4725c66f2f351}
}