The proposed research work focuses on Web Usage Mining. In this research work extraction of users interests from web log data can be done, which are based on visit time and visit density which can be obtain from an analysis of web users web log data. Also, this research work will focus on updating user's interests. Moreover, we will also discuss the technological challenges to provide personalization and examine new developments in data mining and its applications to personalization, including techniques to support clustering and searching in a very high dimensional data space with huge amount of data. Copyright © 2015 American Scientific Publishers All rights reserved.