Microdata for adding products to Google Shopping.
https://support.google.com/merchants/answer/6069143?hl=en-AU
Widgets · eCommerce
Get access to data on 6,472,098 websites that are Microdata for Google Shopping Customers. We know of 1,080,028 live websites using Microdata for Google Shopping and an additional 5,392,070 sites that used Microdata for Google Shopping historically and 331,292 websites in the United States.
Microdata for Google Shopping websites that are also using other technologies.
Get a list of 6,472,098 websites using Microdata for Google Shopping which includes location information, hosting data, contact details, 1,080,028 currently live websites and an additional 968,667 domains that redirect to sites in this list. 5,392,070 sites that used this technology previouslyand 331,292 websites in the United States currently using Microdata for Google Shopping.
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