On the Internet, an exact copy of a popular website. This is done so that some of the traffic can be diverted from the original website to the Mirror SiteOn the Internet, an exact copy of a popular website. This is... when the original site becomes very busy. Alternatively a copy website whose purpose is to attract and direct additional visitors towards the original site, regarded as unacceptable SEO (search engineGoogle, Bing, Yahoo, etc., are examples of Search Engines wh... optimisation) or ‘cheating’ by most search engines.