Sentiments are central to almost all human, actions and activities and can influence the people perception and behavior. People as well as organizations express their sentiments; also called opinions everywhere mostly on internet as the people now-a-days are much dependent on internet. So the requirement of user opinions analysis is gaining importance day-by-day. People post their experiences, and give feedbacks about the products and services that they are using. Blogs, micro blogs, review sites, twitter, and other social networks are the most common platforms that are used by people and organizations for posting their views.