Well, if you have Internet you can go on line to Facebook, myspace, twitter...etc... find your friends and you can keep updated on them and chat with them.
Also, there is MSN (Instant Messaging)...
In short: By letting us communicate on a global level. But some real ways it can help us are: Contact with others such as family from around the world. Information can get around quicker. Countries...
many ways. I can't say them all, but you learn stuff from them, and also it's fun so it helps your enjoyment and therefore helps you relax.
I'm not completely sure of this but that's what I think.