Top 50 USA Web Properties for April 2009
Bill Hartzer
MAY 15, 2009
www.cdc.gov), and the rise in popularity of Twitter and Facebook. Related posts: comScore December 2009 Search Engine Rankings comScore, Inc. comScore Releases August 2009 Search Engine Rankings comScore, Inc. Some of the most notable drivers of traffic to certain websites include the swine flu concerns that people had (i.e.,
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