Spam refers to any and every Search Engine Marketing techniques that violate search engine guidelines or attempt to achieve increased Rank for a site using content that is irrelevant, deceptive or of tiny bonus to users. Types of spam embrace Hidden Text, content that contains nonsensical Keyword repetition, deceptive Cloaking or numerous Doorway Pages that redirect users to the same Landing Page. If a search engine detects spamming the offending site will be Blacklisted or lose Position. Spam is a Black Hat SEO technique.