Do you find that misspellings of common words set your "bozo bit"?
For many years, I have noticed that when a person chronically misspells a very common, not at all obscure word ("break" vs. "brake", "pour" vs. "pore", etc.) that person's writing tends to set the "bozo bit" in my head and I find it difficult to take their arguments seriously. My best theory explaining why this happens is that such mistakes are generally proof that the person who made them never reads for pleasure and is thus almost certainly an intellectual lightweight. Am I being snobbish/foolish by making the connection? Or is there something to this litmus test?