Well, 13 is the age limit for registering and posting, but we do know of kids younger than that who read threads here. For some reason, younger kids like to ride bikes and Bike Forums is one of those catchy names that pops up in bicycle related web searches.
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"Real wars of words are harder to win. They require thought, insight, precision, articulation, knowledge, and experience. They require the humility to admit when you are wrong. They recognize that the dialectic is not about making us look at you, but about us all looking together for the truth."