Journalists use Signal to surface relevant trends, photos, videos and posts from Facebook and Instagram for use in their storytelling and reporting.
https://www.facebook.com/facebookmedia/get-started/signal
Analytics and Tracking
Get access to data on 9,641,250 websites Facebook Signal Customers. We know of 4,048,837 live websites using Facebook Signal and an additional 5,592,413 sites that used Facebook Signal historically and 1,829,207 websites in the United States.
Get a list of 9,641,250 websites using Facebook Signal which includes location information, hosting data, contact details, 4,048,837 currently live websites and an additional 5,697,470 domains that redirect to sites in this list. 5,592,413 sites that used this technology previouslyand 1,829,207 websites in the United States currently using Facebook Signal.
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