Prevents Google from showing a Site Links search box.
https://support.google.com/webmasters/answer/79812
Widgets · Site Search
Get access to data on 478,613 websites that are Google No Site Links Search Customers. We know of 219,365 live websites using Google No Site Links Search and an additional 259,248 sites that used Google No Site Links Search historically and 102,858 websites in the United States.
Get a list of 478,613 websites using Google No Site Links Search which includes location information, hosting data, contact details, 219,365 currently live websites and an additional 151,262 domains that redirect to sites in this list. 259,248 sites that used this technology previouslyand 102,858 websites in the United States currently using Google No Site Links Search.
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