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 9,084,486 websites Twitter Platform Customers. We know of 1,480,230 live websites using Twitter Platform and an additional 7,604,256 sites that used Twitter Platform historically and 705,263 websites in the United States.
Twitter Platform websites that are also using other technologies.
Get a list of 9,084,486 websites using Twitter Platform which includes location information, hosting data, contact details, 1,480,230 currently live websites and an additional 1,509,146 domains that redirect to sites in this list. 7,604,256 sites that used this technology previouslyand 705,263 websites in the United States currently using Twitter Platform.
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