Years ago, when people visited each other, the first thing they used to ask was, "How are you? How's your health? ... ". Today, when someone visits us the first thing they ask is: "What is your WiFi password?" Have we become strangers to each other? In this thesis we will deal with the following questions: What do social networks represent to us and have we gone too far with them? To the ever-repeating question of the elderly: "Why do you keep typing on your cell phone?" we might not have the answer, but we have some practical solutions by some creative individuals. Talking about the WiFi technology, can we say that it is a kind of a "modern addiction"? The answer is: It certainly is. Addiction is a problem known for a very long time, and experts in various fields of science deal with it. The modern era, the age of advancing technology, brings along new addictions, which attract the attention of today's world. Children and young people, lately more and more adults as well, have begun alienating themselves from the outside world. For some of them the reality has become abstract, because they have found something in the digital and unreal that gives them satisfaction, ful fills their free time etc. This thesis will show all terms related to WiFi technology and what it brings to us. As society modernizes, schools follow the latest trends, so this paper will display Web 2.0 tools, and how they can be, and in what manners, used in classroom teaching, the impact of modern technologies on the health of the child, the positive aspects of Internet use. This thesis will show how the WiFi technology affects health, as well as how children can benefit from using the Internet. This thesis will also display the results of a survey carried out in primary schools "Mato Lovrak" and "Ljudevit Gaj" in Nova Gradiška which purpose was to assay how much time the students in the 5th and 8th grade spend online and why.