The Floodlight Counter tag allows you to count the number of times someone visits your site after clicking on an advertisement for it.
https://support.google.com/tagmanager/answer/6107168?hl=en
Advertising
Get access to data on 531,617 websites Google Floodlight Counter Customers. We know of 123,837 live websites using Google Floodlight Counter and an additional 407,780 sites that used Google Floodlight Counter historically and 47,776 websites in the United States.
Get a list of 531,617 websites using Google Floodlight Counter which includes location information, hosting data, contact details, 123,837 currently live websites and an additional 965,788 domains that redirect to sites in this list. 407,780 sites that used this technology previouslyand 47,776 websites in the United States currently using Google Floodlight Counter.
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