Fanfiction Tips for Parents
Encourage writing. Writing -- even if the subject matter is a little blue -- is a positive form of self-expression.

Use privacy settings. Each tool offers different ways for users to protect their privacy, from encouraging pseudonyms (which has pros and cons; see below) to restricting who can read your work to limiting comments. Kids just starting out, for example, should use stricter settings, sharing only with known friends. Once kids get familiar with the tool they're using, you can help them ease up on the settings.