Prevents Google from showing a Site Links search box.
https://support.google.com/webmasters/answer/79812
Widgets · Site Search
Get access to data on 527,774 websites that are Google No Site Links Search Customers. We know of 263,516 live websites using Google No Site Links Search and an additional 264,258 sites that used Google No Site Links Search historically and 123,374 websites in the United States.
Get a list of 527,774 websites using Google No Site Links Search which includes location information, hosting data, contact details, 263,516 currently live websites and an additional 155,884 domains that redirect to sites in this list. 264,258 sites that used this technology previouslyand 123,374 websites in the United States currently using Google No Site Links Search.
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