Makes sharing on Google+ easy
https://developers.google.com/+/plugins/share/
Widgets
Get access to data on 282,657 websites that are Google Plus One Share Button Customers. We know of 37,955 live websites using Google Plus One Share Button and an additional 244,702 sites that used Google Plus One Share Button historically and 21,394 websites in the United States.
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Get a list of 282,657 websites using Google Plus One Share Button which includes location information, hosting data, contact details, 37,955 currently live websites and an additional 13,380 domains that redirect to sites in this list. 244,702 sites that used this technology previouslyand 21,394 websites in the United States currently using Google Plus One Share Button.
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