Social networks being: MySpace, Facebook, Twitter, YouTube, etc etc.. I believe all of these require users to be at least 13-years of age or older to register. What is an appropriate age to use social networks in your opinion? Is it really an issue of one's age or one's maturity? Should some social networks be more restrictive than others? At what age did you first start using social networks? And what age will you allow your children to start using them?