  In this paper an attempt is made to review technological, economical and
legal aspects of the spam in detail. The technical details will include
different techniques of spam control e.g., filtering techniques, Genetic
Algorithm, Memory Based Classifier, Support Vector Machine Method, etc. The
economic aspect includes Shaping/Rate Throttling Approach/Economic Filtering
and Pricing/Payment based spam control. Finally, the paper discusses the legal
provisions for the control of spam. The scope of the legal options is limited
to USA, European Union, New Zealand, Canada, Britain and Australia.
