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 4,774,299 websites that are Google Analytics Event Tracking Customers. We know of 2,021,612 live websites using Google Analytics Event Tracking and an additional 2,752,687 sites that used Google Analytics Event Tracking historically and 1,190,363 websites in the United States.
Get a list of 4,774,299 websites using Google Analytics Event Tracking which includes location information, hosting data, contact details, 2,021,612 currently live websites and an additional 1,059,134 domains that redirect to sites in this list. 2,752,687 sites that used this technology previously and 1,190,363 websites in the United States currently using Google Analytics Event Tracking.
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