books.google.com - The communication by email has become one of the most important means of communication in cooperate and private. An internet user is constantly confronted by mass emails containing undesired information. Spam, defined as bulk unsolicited emailing, generally commercial in nature, and predominately fraudulent....http://books.google.com/books/about/The_Concept_Of_Spam_In_Email_Communicati.html?id=72d9PCtm7pQC&utm_source=gb-gplus-shareThe Concept Of Spam In Email Communication
