Google+ API functionality.
https://developers.google.com/+/
Widgets
Get access to data on 4,805,510 websites that are Google Plus One Platform Customers. We know of 329,057 live websites using Google Plus One Platform and an additional 4,476,453 sites that used Google Plus One Platform historically and 132,235 websites in the United States.
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Get a list of 4,805,510 websites using Google Plus One Platform which includes location information, hosting data, contact details, 329,057 currently live websites and an additional 187,643 domains that redirect to sites in this list. 4,476,453 sites that used this technology previouslyand 132,235 websites in the United States currently using Google Plus One Platform.
Countries
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