Yes top posting exists. It is tolerated more places than not, and here especially, so mostly I have stopped complaining. That does not make it less ignorant. At the beginning, MacVisionaries attracted some real icons in the field, like Joe Clark and Peter Korn. But the signal to noise ratio is too low to keep those folks around. That is okay, social listservs have their place on the 'Net too.
David, you go ahead and write that authoritative article and get someone else to post it. You will forgive me if I do not hold my breath in the mean time!
