paragraph on social networking..approx 100 words..
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Answer:
A social network service is an online service where people talk to other people. This web- based service includes easier contacts with friends and increase chances to make new friends and create a community. Facebook is the most popular. Google +, Twitter, etc. are other frequently used social services. Social networks are expanding so fast because it is cost free. Users can share their ideas, pictures, posts, activities, events, interests with people in their network.They can make their personal profile as like presenting themselves before the entire online community. There are privacy protection measures too. A user can decide what information should be shared with others. It creates social relations among the people around the world. It has some disadvantages too, such as people are spending a lot of time on these sites.