Events are user interactions with content that can be tracked independently from a web page or a screen load.
https://developers.google.com/analytics/devguides/collection/analyticsjs/events
Analytics and Tracking
Get access to data on 3,634,129 websites that are Google Analytics Event Tracking Customers. We know of 516,990 live websites using Google Analytics Event Tracking and an additional 3,117,139 sites that used Google Analytics Event Tracking historically and 213,484 websites in the United States.
Get a list of 3,634,129 websites using Google Analytics Event Tracking which includes location information, hosting data, contact details, 516,990 currently live websites and an additional 641,348 domains that redirect to sites in this list. 3,117,139 sites that used this technology previouslyand 213,484 websites in the United States currently using Google Analytics Event Tracking.
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