What's the best way to use FACEBOOK safely? We don't want to be scammed or used for marketing .?

[Firstname]

You can go into privacy settings and make it so only certain people can see the things that you post, your pictures, your info ect (or make it available to no one at all). You can also set an option so that people will not be able to find you if they search for your name unless you add them first. As for scams and marketing, DO NOT ADD THIRD PARTY FACEBOOK APPS. Things like farmville or picture of the day or things like that (well, not all of them, but some) have small print that basically says they can use your profile to advertise things to your friends.

Facebook is pretty safe though honestly just set your privacy settings very strict and don't post anything you wouldn't want your parents/boss to see and you will be fine. The most important thing is the third party apps, you really have to stay away from those because if you install them they WILL use your information (why do you think they're free?). These are very easy to stay away from though.