This is a Survey conducted by Nielsen Online, a service of The Nielsen Company, provides measurement and analysis of online audiences, advertising, video, consumer-generated media, word of mouth, commerce and consumer behavior. Previously a majority investor in both companies, Nielsen purchased NetRatings and BuzzMetrics in the spring of 2007, combining them to form Nielsen Online. Outside of the U.S., Nielsen Online operates in 16 countries across Europe, Latin America and Asia Pacific.
Periodically review the list and add new sites, so the results may change accordingly. For more information about our sourcing guidelines, go to www.netratings.com
