@electronic{research.yahoo.com,
   title       = {TagLines: Visualizing tags over time}, 
   url         = {http://research.yahoo.com/taglines/},
   biburl      = {https://puma.uni-kassel.de/url/94ee9dea0318ddff84e0df6f884687cf/benz},
   keywords    = {tag tagcloud timeline visualization yahoo},
   added-at    = {2011-02-04T16:08:56.000+0100},
   description = {},
   interhash   = {94ee9dea0318ddff84e0df6f884687cf}, 
   intrahash   = {94ee9dea0318ddff84e0df6f884687cf}
}

@electronic{addons.mozilla.org,
   title       = {Search Cloudlet for Google, Yahoo and Twitter :: Add-ons for Firefox}, 
   url         = {https://addons.mozilla.org/en-US/firefox/addon/9943},
   biburl      = {https://puma.uni-kassel.de/url/f6bf13e0cf7495d19bda244cce8158c1/benz},
   keywords    = {addon firefox google search tagcloud},
   added-at    = {2011-02-04T16:08:07.000+0100},
   description = {Search Cloudlet inserts smart tag clouds into Google / Yahoo / Twitter interface to help you search faster},
   interhash   = {f6bf13e0cf7495d19bda244cce8158c1}, 
   intrahash   = {f6bf13e0cf7495d19bda244cce8158c1}
}