The many short articles about celebrities, sports, and games are in line with teen and tween interests and the tools for self-expression through blogs, forums, and profiles get kids personally invested.
Pedagogy
Kids are the creators here, so they are personally invested in helping to enforce rules so their content can stay. The freedom to create forums and write articles connects kids who are into the same stuff.
Support
There's a resource section for parents and teachers and a companion site in Spanish.
