International Journal of Computer Applications
World Wide Web (WWW) is very prevalent and important central for information retrieval in current age. The WWW is holding huge amount of data at times this will lead to the problem information overload. Today, the huge amount of information is available online due to the acceptance and understanding of the possibilities of internet. This reason makes the WWW as an important research area. In this paper, the authors review some of the recommendation systems. They discuss by looking at its merits and demerits accordance to the applications.