Worldwide information networks

There are many informations all over the world. Most people can get these informations because worldwide infomation networks have been built such as Internet and satelite broadcasting. If we have enough money,we can use these network. There are no borders and there are huge informations. I think we have some advantages. For example, we can get high-quality informations all over the world. But we have some disadvantages too. It might be we don't know which infomation should we choose? What things will happen or have happend by this two things?