Prevents Google from showing a Site Links search box.
https://support.google.com/webmasters/answer/79812
Widgets · Site Search
Get access to data on 418,351 websites that are Google No Site Links Search Customers. We know of 315,798 live websites using Google No Site Links Search and an additional 102,553 sites that used Google No Site Links Search historically and 154,712 websites in the United States.
Get a list of 418,351 websites using Google No Site Links Search which includes location information, hosting data, contact details, 315,798 currently live websites and an additional 252,401 domains that redirect to sites in this list. 102,553 sites that used this technology previously and 154,712 websites in the United States currently using Google No Site Links Search.
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