Globally alters the site visibility settings to "Ask search engines not to index this site" when enabled. Upon deactivation it selects "
No. All this plugin does is enable the built-in WordPress privacy setting. This settings politely asks bots not to index the site, however they are free to ignore the directive and index the site anyways. In most cases bots will honor the directive and not crawl the website. Search engines, such as Google and Bing honor this.