A tool that helps website owners understand how much traffic they receive from Twitter and the effectiveness of Twitter integrations on their sites. Includes Twitter Conversion Tracking.
https://dev.twitter.com/blog/introducing-twitter-web-analytics
Analytics and Tracking · Conversion Optimization
Get access to data on 967,540 websites that are Twitter Analytics Customers. We know of 66,954 live websites using Twitter Analytics and an additional 900,586 sites that used Twitter Analytics historically and 44,962 websites in the United States.
Get a list of 967,540 websites using Twitter Analytics which includes location information, hosting data, contact details, 66,954 currently live websites and an additional 573,940 domains that redirect to sites in this list. 900,586 sites that used this technology previously and 44,962 websites in the United States currently using Twitter Analytics.