Abstract
Social media mining is an emerging field with a lot of research areas such as sentiment analysis, link prediction, spammer detection, and community detection. In today's scenario, researchers are writing in the area ofcommuniay detection and sentiment analysis because the main component of social media is user. Use's create different types of community in social world. The ideas and discussions in the community may be negative or positive. To detect the communities and their behavior researcher have done a lot of14301t but still two major issues are presenters per survey, Scalability and Quality of the community. These issues of community detection motivate to work in this area of social media mining This paper gives a bird eye view over social media and community detection.