The Facebook

I think it's dangerous when you leave all your data exposed as a friend and agree to any unknown person in facebook have the option to hide the information and only show it to people you want, no one forces you to anything and you can close the account when anytime.

Its advantages, it has served to me to be in touch with friends that I have not seen it with a family who is away, as there are only disadvantages if you keep your privacy because it can be a place where someone with malicious intent can use this program to commit any wrongdoing especially with someone who is very naive or even someone under age, but such people wherever they exist and so must be careful never to give personal data or by internet, in person or by phone to strangers.