With the advent of web 2.0, online reviews is playing a critical role in the sales of products & services. People before deciding the purchase, are visiting the review sites to get opinion. There are several review sites like imdb for moviews, yelp for restaurants, naaptol for electronics, amazon for books, mouthshut & others. Marketers can utilize the information found in reviews to better target the offers. There have been allegations of reviews being written to influence the users. With social media, users are expressing reviews in twitter, facebook & blogs as well. As in the case of netflix price increase, users have flooded the communities with negetive comments about price hike.