A URL that has been removed from a search engine’s index [link:]. Delisted sites are ignored by search engines. A site may become delisted for many reasons:
- Engaging in Black-Hat SEO[link:] tactics
- Pages on new websites (or sites with limited link authority relative to their size) may be temporarily de-indexed until the search engine does a deep spidering and re-cache of the web.
- Pages which have changed location and are not properly redirected, or pages which are down when a search engine tries to crawl them may be temporarily de-indexed.
- If a website tripped an automatic spam filter it may return to the search index anywhere from a few days to a few months after the problem has been fixed.
- If a website is editorially removed by a human you may need to contact the search engine directly to request re-inclusion.
- During some updates search engines readjust crawl priorities.
