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 741,046 websites that are Twitter Website Universal Tag Customers. We know of 194,238 live websites using Twitter Website Universal Tag and an additional 546,808 sites that used Twitter Website Universal Tag historically and 106,695 websites in the United States.
Get a list of 741,046 websites using Twitter Website Universal Tag which includes location information, hosting data, contact details, 194,238 currently live websites and an additional 781,798 domains that redirect to sites in this list. 546,808 sites that used this technology previouslyand 106,695 websites in the United States currently using Twitter Website Universal Tag.
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