Microdata for adding products to Google Shopping.
https://support.google.com/merchants/answer/6069143?hl=en-AU
Widgets · eCommerce
Get access to data on 6,617,289 websites that are Microdata for Google Shopping Customers. We know of 1,006,622 live websites using Microdata for Google Shopping and an additional 5,610,667 sites that used Microdata for Google Shopping historically and 307,727 websites in the United States.
Microdata for Google Shopping websites that are also using other technologies.
Get a list of 6,617,289 websites using Microdata for Google Shopping which includes location information, hosting data, contact details, 1,006,622 currently live websites and an additional 901,068 domains that redirect to sites in this list. 5,610,667 sites that used this technology previouslyand 307,727 websites in the United States currently using Microdata for Google Shopping.
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