Source : Free On-Line Dictionary of Computing

fool file
     
         A term found on {Usenet} for a notional repository of
        all the most dramatically and abysmally stupid utterances
        ever.  An entire subgenre of {sig blocks} consists of the
        header "From the fool file:" followed by some quote the poster
        wishes to represent as an immortal gem of dimwittery; for this
        usage to be really effective, the quote has to be so obviously
        wrong as to be laughable.  More than one {Usenetter} has
        achieved an unwanted notoriety by being quoted in this way.
     
        (2001-01-05)