Why would "disallow: /*?s=" be used in a robots.txt file?

@pietro 

The "disallow: /*?s=" directive in a robots.txt file is used to instruct search engine crawlers not to index or crawl pages containing the "?s=" parameter in the URL.

The "?s=" parameter is often used in content management systems (CMS) or websites with search functionality to pass search query parameters to the server. However, these search query URLs generally generate dynamic and continuously changing search results, which may not be useful for search engines to index.

By using "disallow: /*?s=" in the robots.txt file, website owners can prevent search engine bots from wasting resources crawling and indexing these dynamic search query URLs, which can help to maintain a more efficient crawl budget, prevent duplicate content issues, and ensure that search engine bots focus on more valuable and relevant content.