What are potential dangers associated with social networks? What are the pros and cons of social networks? (перевод: Каковы потенциальные опасности, связанные с социальными сетями? Каковы плюсы и минусы социальных сетей?)

Potential dangers of social networks are addiction and private information in open access. It's very wonderful that you can get various friends from any country. More than that, you can find useful articles, videos, disscussions and music in social networks. I'm sure that bad side of social networks is nonverbal virtual communication. People don't gain live experience of communication, and it's sad. Also some harm causes by adult content. People waste a great amount of time during chatting in these networks.