Settings – Privacy

Simply put, you can choose here if Google, Yahoo, Bing and similar search engines are allowed to “crawl” your site and index it, so that your site pages might come up when people carry out general web searches, or not. If you change this from “visible to everyone including search engines” to “block search engines”, a setting is made on your site (using a “Robots.txt” file, you may see references to this) which tells search engine crawlers (the automatic programs which scan the entire world wide web looking for pages to index) that they may not index your site.