Social networking sites are popular places where people share ideas and information. A study looked at why people participate in these communities. They found that when people feel like they are getting something back (like help or enjoyment) and have strong relationships with others, they are more likely to join in. Also, how much people believe in giving and taking affects their willingness to participate. Overall, the study shows that feeling like you are getting something in return and having strong relationships with others can influence how much you participate in social networking sites.