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 8,825,917 websites that are Twitter Platform Customers. We know of 1,377,141 live websites using Twitter Platform and an additional 7,448,776 sites that used Twitter Platform historically and 649,267 websites in the United States.
Twitter Platform websites that are also using other technologies.
Get a list of 8,825,917 websites using Twitter Platform which includes location information, hosting data, contact details, 1,377,141 currently live websites and an additional 1,429,705 domains that redirect to sites in this list. 7,448,776 sites that used this technology previouslyand 649,267 websites in the United States currently using Twitter Platform.
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