White Hat SEO Glossary Index

The commonest marketing related use of the term blacklist refers to a list of ip addresses which are flagged as generating email spam. Software is used to identify spamming activity and compile lists. Controversy surrounds the practice, but blacklists are here to stay owing to the enormous impact of mail spam. In Seo the term can sometimes refer to a search engine banning, delisting or substantially downgrading a web property in its index.