To the self-appointed sin-free: Are you sure? I don't see how anyone can feasibly avoid re-inventing wheels unless you never achieve anything owing to spending all your time checking for originality. And that isn't the only trap for the self-righteous here. Commenting habits vary widely. Too widely to fit into the low standard deviation implied by the high "sin-free" percentage of voters. Oops!
Update: Let he who is without sin cast the first vote? or something like that.