|Social Interaction between the people in different ways like Facebook, Twitter, LinkedIn, Google+, YouTube in which they share their information or different views etc. and it is called social media. Among the above mentioned social networking sites Facebook and Twitter have more users and user activity. Facebook claimed that on an average monthly 955 million users are using Facebook and for Twitter they have an estimated 462 million users. The wide acceptance of these social media environments offers a large and well-defined segment to the savvy marketer. Twitter and facebook users come under social media family but they work differently. Social media is classified into many different forms which include magazines, Internet forums, weblogs, social blogs, microblogging, wikis, social networks, podcasts, photographs or pictures, video, rating and social bookmarking.
Review articles are the summary of current state of understanding on a particular research topic. They analyze or discuss research previously published by scientist and academicians rather than reporting novel research results.
Review article comes in the form of systematic reviews and literature reviews and are a form of secondary literature. Systematic reviews determine an objective list of criteria, and find all previously published original research papers that meet the criteria. They then compare the results presented in these papers. Literature reviews, by contrast, provide a summary of what the authors believe are the best and most relevant prior publications.
The concept of "review article" is separate from the concept of peer-reviewed literature. It is possible for a review to be peer-reviewed, and it is possible for a review to be non-peer-reviewed.