Makes sharing on Google+ easy
https://developers.google.com/+/plugins/share/
Widgets
Get access to data on 292,869 websites Google Plus One Share Button Customers. We know of 34,158 live websites using Google Plus One Share Button and an additional 258,711 sites that used Google Plus One Share Button historically and 21,308 websites in the United States.
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Get a list of 292,869 websites using Google Plus One Share Button which includes location information, hosting data, contact details, 34,158 currently live websites and an additional 17,008 domains that redirect to sites in this list. 258,711 sites that used this technology previouslyand 21,308 websites in the United States currently using Google Plus One Share Button.
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