Andrea Collazo, blogging for Mujeres Construyendo (Women Building), proposes educating parents about the resposible use of social networks, so they can promote it among their children.

Photo by George Wesley & Bonita on flickr (CC BY-NC-ND 2.0)
Collazo advises parents on how to socialize their children from very early age with new technologies, promoting responsible use of social networks. She points out that constant dialogue between parents and children about social network and their risks is important, about, for instance, damages to own reputation and other people's:
Habla sobre el sentido común y cómo aplicarlo a las redes.
Hoy en día los teléfonos ayudan a capturar imágenes y videos de situaciones cotidianas.
Recomiéndales que antes de dar al botón enviar, piensen en cómo se pueden sentir los otros con esa publicación.
Talk about common sense and how to use it with networks.
Today, phones help capturing images and videos of everyday situations.
Recommend them that before hitting the SEND button, they should think and how may other people feel about that posting.
Besides, children should be aware of the permanence of contents uploaded to Internet, the so called “digital print”. What's fun today may be a headache tomorrow, when looking for a job or applying to college. On the other hand, parents can speak openly with their children about cyberharassement and how to behave when facing these risky situations.
You can follow Andrea Collazo on Twitter.