One of the advantages of using Internet is that we can find every information we want to. Another advantage is that we can communicate almost with everyone through the Net with help of e-mails and messengers.
On the other hand, the disadvantages are a serious problem for today's world. The Internet is causing one of the worst diseases - the Internet addiction. People are wasting their time taking part in the useless chats.
To sum up, the Internet is very necessary but we have to learn how to use it and avoid all the dangers of usage. We should remember that it's only a source of information and not a way to search for serious friendship.