The quantity of users of social networks nowadays is really incredible. Both developers and users have felt it. Modern people often even don’t imagine themselves without social networks and virtual communication. But is this good or bad tendency? In this article we will try to help you answer this question. First of all, pluses: 1. Social networks give us communication, connections with a lot of people. It is not a secret already, that online communication has become much more attractive for a lot of people. And in today's society a incredible quantity of people are just lonely and for them online communication is necessary. 2.A search for classmates, old friends. Social network allow us to discover old friends that have moved years ago, classmates and sometimes relatives we have lost contact with. We can communicate with them in the social networks and meet in in reality. Not long ago we could only dream of such possibilities. 3. Find new friends and meet new people. Social networks give us incredible dating possibilities. The great number of users in social network also gives possibility to all users to find friends according to their interests and hobbies. 4. Great possibilities for ad and job finding. Social networks can be also used as bulletin boards and taking into consideration the number of users, very good ones. 5.Interests. For many visitors social networks are the interesting spending of time. Such interest is not a bad one and it gives users a big numer of possibilities for self-realization. In social networks users can be whoever they like and communicate without worries. But of course, as any popular phenomena social networks have their problems too: 1. The information distributed in social network can be connected by who ever, without users’ even knowing it. 2. Contact information may be used for spam. 3. Sometimes social networks can even harm families and close relatives. The explanation in this case is easy: users, who are too interested in social networks spend online all free time and don’t pay attention to their families. In this case, such hobby can spoil real relationships. 4. The absence of control can hurt the psychics of children. Parents should pay attention with whom their children spend time in online. 5. Medics frequently state that social networks are dangerous because they cause the addiction, and it is really so. A great number of people don't imagine spending a day without visiting the social network. The absence of internet becomes tragedy and people got addicted to virtual communication. Particulary if people have problems in real life, they spend more and more time in social networks so replacing life with social networks. Wholly, the attitude to social networks can be different depending on the people and concrete situation, but they have conquered a big segment of internet and are still developing. Today a big quantity of people just can’t imagine their life without social networks and the quantity of their members is still growing nowadays. But the main matter in this case is to find a golden mean: use all advantages that social networks give us but don’t forget about the real life too.