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 9,092,817 websites Twitter Platform Customers. We know of 1,648,912 live websites using Twitter Platform and an additional 7,443,905 sites that used Twitter Platform historically and 799,714 websites in the United States.
Twitter Platform websites that are also using other technologies.
Get a list of 9,092,817 websites using Twitter Platform which includes location information, hosting data, contact details, 1,648,912 currently live websites and an additional 1,654,499 domains that redirect to sites in this list. 7,443,905 sites that used this technology previouslyand 799,714 websites in the United States currently using Twitter Platform.
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