Bathroom Wall (http://www.facebook.com/bathroomwall)

Families can talk about all the reasons this Facebook tool should be avoided. Its chief aim -- to promote gossip -- is the least of it. The twisted kicker: users are forced to invite the very Facebook “friends” who will humiliate them. As unsavory as this app is, it’s a good springboard for discussing friendship. What are the differences between real pals and pretenders? How does the Internet blur the line even further? Kids need to be reminded that what goes around comes around; just as in real life, the digital backstabbers are likely to be exposed eventually. The big difference is that unlike in real life, where walls can be painted over, Bathroom Wall preserves ugly sentiments in a digital footprint that can haunt the owner for years to come. Read our Social Network Tips for more guidance.