18) People on online message boards (not this one!) who (a) post answers to questions that are identical to previous answers, and not just because they were posting at the same time, but, rather, days later, or (b) answer question giving erroneous and possibly dangerous information, without waiting for someone more knowlegable to answer first or even noting that they might be wrong, since they're just guessing, or (c) posting the same question to all of the categories without regard to the subject matter.