It's worth noting that a lot of these age limits are a result of COPPA, which is legislation that prohibits companies from tracking people under the age of 14 w

It's worth noting that a lot of these age limits are a result of COPPA, which is legislation that prohibits companies from tracking people under the age of 14 without parental permission. When this law was first introduced, a site that I used heavily as a minor required me to get a permission form signed and faxed by my parents before they'd unlock my account -- while I actually got them to do this, it would have been faster and easier to create a new account with a fake age. I think these laws need to be revamped, although because they only affect kids they're not really on anyone's radar (in the US, the deteriorating and underfunded school system is a more pressing problem). Companies end up tracking kids anyway through their parents, whether it's the "35-year-old female using Angry Birds" (actually their mother handing their phone to their kid on a train) or having your parents upload your baby photos to Facebook hours after your birth.