Google+ API functionality.
https://developers.google.com/+/
Widgets
Get access to data on 4,848,364 websites that are Google Plus One Platform Customers. We know of 334,677 live websites using Google Plus One Platform and an additional 4,513,687 sites that used Google Plus One Platform historically and 134,772 websites in the United States.
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Get a list of 4,848,364 websites using Google Plus One Platform which includes location information, hosting data, contact details, 334,677 currently live websites and an additional 199,635 domains that redirect to sites in this list. 4,513,687 sites that used this technology previouslyand 134,772 websites in the United States currently using Google Plus One Platform.
Countries
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