Abstract: Social media, a technology which is a complicated frontier, a tool that has yet to be understood to its fullest capacity. Facebook ranks as the number one Social networking site. Facebook the present happening social networking site now boasts over 800 million active users, half of whom log in on any given day and are exposed to a plethora of apps, pages, groups and events designed to entertain, build communities or spread word Media website. The paper is a study of Facebook’s functioning as the most valuable market research tool that has ever existed. The study about interactivity that Facebook allows wall posting, commenting, liking, etc., brands now possess a highly valuable market research tool which is completely free. The distribution of marketing messages through wall posts, polls and the highly effective video facility, brands can immediately gauge reaction and success of their campaigns from those users who opt to like, comment upon or share said content