No company is capable of moderating all of the things a parent wants to keep from a child. That has to be a household controlled issue, and it takes a lot of work to monitor what your kid is doing. It is the same as anything connected to the internet. Some people are crazy/mean/bad influences/dangerous. No moderation will be perfect, so it is more important to understand what your kid is doing and give them guidance. Otherwise, ban them from interacting entirely.