Part of SANS security awareness program is a site called 'Securing The Human'.
Every month they publish a newsletter directed at the typical web user. Not those of us with a heightened awareness of security, but people like your office manger, mail room clerk or parents.
This month's newletter, appropriately called 'OUCH!', deals with privacy and security surrounding social networking.
I encourage you to take a look, and disseminate it to your staff. In fact, they even encourage you to do that.
It is available in English, French, Arabic, Italian, Korean, Malaysian, Polish, Portuguese, Spanish, and both Simple and Traditional Chinese.