Nowadays there is quite a large number of social networks. And usual person at the age of teens and older has accounts in several social networks such as tweeter , face book or Instagram. In my opinion it's not so bad when the time you spend there doesn't take you away from your work, friend and relatives. If you are not addicted it's ok. But if you notice that you spend most of your time there it can be dangerous. Some people think of social network as of some source of making money and getting popular without of leaving a house. As for me I have two accounts in facebook and Instagram. There I share photos with my friend and comment fotos of other people. I find it helpful in being in touch.