# See https://www.robotstxt.org/robotstxt.html for how this file is read. # # Everything a reader can open is open to a crawler. What is disallowed here # is an address with a query string: the ranking filtered, sorted, paged or # compared, which is thousands of combinations of the same rows, each of which # a crawler would fetch and none of which is a page of its own. Every chain, # city and product has an address without one. # # The pages that are not a reader's do not appear here. A disallow line is a # published list of where to look, read by anybody scanning for a way in, and # it is the wrong tool for the job: those pages are linked from nowhere public # and every one of them answers a crawler with X-Robots-Tag: noindex, which # keeps them out of an index without naming them. See ApplicationController. User-agent: * Disallow: /compare Disallow: /*?