> I can't think of a legal reason for this policy. Normally, one must be 18 years old to enter into a contract, so the policy of preventing users under 18 from

> I can't think of a legal reason for this policy. Normally, one must be 18 years old to enter into a contract, so the policy of preventing users under 18 from using the service is rational. Depending on where you are, I think this is not entirely true. IANAL, but I think that in many/most US states, contracts with minors are not presumptively void, they are voidable at the option of the minor (or their guardian, I imagine). Of course, this is a pretty big downside for their counterparties, so it makes contracts with minors pretty unappealing, obviously.