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 4,693,680 websites that are Google Analytics Event Tracking Customers. We know of 1,406,620 live websites using Google Analytics Event Tracking and an additional 3,287,060 sites that used Google Analytics Event Tracking historically and 656,197 websites in the United States.
Get a list of 4,693,680 websites using Google Analytics Event Tracking which includes location information, hosting data, contact details, 1,406,620 currently live websites and an additional 1,005,564 domains that redirect to sites in this list. 3,287,060 sites that used this technology previously and 656,197 websites in the United States currently using Google Analytics Event Tracking.
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