The page embeds the Twitter platform in one method or another.
http://twitter.com/about/resources
JavaScript Libraries and Functions
Get access to data on 8,862,476 websites that are Twitter Platform Customers. We know of 1,355,721 live websites using Twitter Platform and an additional 7,506,755 sites that used Twitter Platform historically and 633,658 websites in the United States.
Twitter Platform websites that are also using other technologies.
Get a list of 8,862,476 websites using Twitter Platform which includes location information, hosting data, contact details, 1,355,721 currently live websites and an additional 1,395,590 domains that redirect to sites in this list. 7,506,755 sites that used this technology previouslyand 633,658 websites in the United States currently using Twitter Platform.
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