Would you let anyone who was walking along the street walk up and fix your car?
Having a FAQ is alright... If someone who knows what they are doing makes critical judgements on which answers are good and which aren't worth the paper they aren't written on.
Like Ron's... "deeRusting your rusty gas tank" ... that would be worth putting in a FAQ.
I am sure he is getting tired of telling that one.
But would the next guy come along and .....not read IT.... also?