Knowledge Tree

This document discusses social network sites and how they are changing concepts of public and private spaces for teenagers. It notes that teenagers are spending significant time on social media like MySpace, Facebook, and Bebo. While these sites allow public interaction, they have unique properties like persistence of information, searchability, replicability of content, and invisible audiences that change social norms. These properties make context harder to interpret and change the rules of interacting online compared to physical public spaces. The document explores how teenagers navigate this new environment and the role of educators in helping guide them.