mylot counts quality over quantity, is that right?

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I read somewhere here in mylot that "mylot counts quality over quantity", so you would earn more by writing discussions of good quality than just writing alot of discussions which are of not so high quality, and I wonder if that's true? when the earning is updated, is it someone who do that or the earning is updated automatic by the "site"? I mean it certainly is not a human who read all this discussions and then give the one, that he/she thinks it's of high quality, more money. the earning must be updated by the "computer" or the "machine" without human intervention, so how do the "machine" which updates the earning that this or that discussion is of bad or good quality??