A tool from Twitter that makes it possible for advertisers to track website conversions and manage tailored audience campaigns.
https://blog.twitter.com/2016/website-conversion-tracking-and-remarketing-made-easier-and-more-flexible
Analytics and Tracking
Get access to data on 744,271 websites that are Twitter Website Universal Tag Customers. We know of 188,065 live websites using Twitter Website Universal Tag and an additional 556,206 sites that used Twitter Website Universal Tag historically and 100,479 websites in the United States.
Get a list of 744,271 websites using Twitter Website Universal Tag which includes location information, hosting data, contact details, 188,065 currently live websites and an additional 717,507 domains that redirect to sites in this list. 556,206 sites that used this technology previouslyand 100,479 websites in the United States currently using Twitter Website Universal Tag.
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