Interscience Open Access Journals
Today due to the popularity of E-commerce sites it became a target for spammers apart from well-known email and web spam. The proliferation of E-commerce sites has made web an excellent source of gathering customer reviews about products; as there is no quality control anyone one can write anything which leads to review spam. This paper previews and reviews the substantial research on review spam detection technique. Further it provides state of art depicting some previous attempt to study review spam detection.