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 538,521 websites that are Google Floodlight Counter Customers. We know of 190,358 live websites using Google Floodlight Counter and an additional 348,163 sites that used Google Floodlight Counter historically and 71,260 websites in the United States.
Get a list of 538,521 websites using Google Floodlight Counter which includes location information, hosting data, contact details, 190,358 currently live websites and an additional 1,114,099 domains that redirect to sites in this list. 348,163 sites that used this technology previously and 71,260 websites in the United States currently using Google Floodlight Counter.
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