Facebook is safe?

Like the communities in the physical world, no social networking site, the virtual world, online games, or any other social media service can provide a guarantee A 100% safety, Facebook included. Why? Because it is the social web, and security is highly dependent on user behavior towards each other. Facebook ensures security and confidentiality, and education for their users. parents benefit from a visit to Facebook Safety Center, a comprehensive resource for all Facebook users with special areas for teens, parents, educators, and law
the application. This safety information and advice on site are important for why Facebook "product" is produced by its users. Parents need that, on the social Web, security is a shared responsibility - a negotiation
between users (for example, between people in a family photo sent by a family member in it), between users and the site, and between users and adolescents their parents.

So the short answer to this question is that in this new environment very social environment, a user's security depends on the user's site. this is why parents should be informed and keep the lines of communication with their Children to open - because the youth, like all Facebook users are constantly communication, publishing and sharing content on the site.