Concentrate more on promoting than on demoting. The real goal here is to find the juicy good stuff and let others read it. Do not promote personal agendas. Do not let your opinions factor in. Try to be impartial about this. Simply disagreeing with a comment is not a valid reason to mark it down. Likewise, agreeing with a comment is not a valid reason to mark it up. The goal here is to share ideas. To sift through the haystack and find needles. And to keep the children who like to spam Slashdot in check.