- Facebook friends are not friends.
- Social networking requires a presence on the Internet, which opens the user up to the possibility of being cyber-stalked or cyber-bullied or the terrifying possibility of becoming known to a child predator.
- Social networking requires the making of judgment calls. How sound is your child's judgment? Are you sure?
- Note that colleges and employers are open about the fact that they vet candidates by looking at their Facebook pages and profiles.
- Note that "guilt by association" is alive and well in this context. Maybe you can vouch for your own child's judgment but can you vouch for the judgment of all of his or her "friends"? Are you sure their messages do not reflect poorly on your child?
- Best line from the movie The Social Network: "The Internet isn't written in pencil. It's written in ink". Your posts and those of your children and their "friends" cannot be erased.
- The accumulation of Facebook friends has become a status symbol. As a result, many young users have hundreds or thousands of "friends". It takes seconds for one of those friends to pass along something from your child's wall to their friends and so on and so on and so on.
- Facebook was created by a hacker and is not hacker-proof itself.
For the young adult in your life, consider suggesting Katie Finn's Top 8, the story of a high schooler whose "Friendverse" page is hacked and horrible things are posted about her. The sequel, What's Your St@tus? came out this summer.
In the world of technology beyond Facebook, young adults are urged to delve into the world, mind and writing of Cory Doctorow, author of Little Brother and For the Win