Prevents Google from showing a Site Links search box.
https://support.google.com/webmasters/answer/79812
Widgets · Site Search
Get access to data on 511,819 websites that are Google No Site Links Search Customers. We know of 245,649 live websites using Google No Site Links Search and an additional 266,170 sites that used Google No Site Links Search historically and 114,594 websites in the United States.
Get a list of 511,819 websites using Google No Site Links Search which includes location information, hosting data, contact details, 245,649 currently live websites and an additional 148,467 domains that redirect to sites in this list. 266,170 sites that used this technology previouslyand 114,594 websites in the United States currently using Google No Site Links Search.
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