Misuse of the Karma system
tl;dr - The Boards seriously don't understand upvoting and downvoting
On Reddit and on here, the intent of upvotes and downvotes is supposed to be a measure of contribution to discussion. Your vote is not meant to be 'agree' or 'disagree', that is what your post is supposed to be for.
Did that guy rationally state his opinion or give facts about the thread topic, is there effort in their post? Upvote it. Did they just post "no you're wrong"? Downvote it!
It does you no service to downvote legitimate posts just because you disagree with them (or even upvote only because you agree). It stifles real discussions in favor of popular tripe, where posts like "gut zed" rise to the top as 'shining' example of our community, and the front page is spammed with the same thread over and over again.
Forums are supposed to be about discussion but right now the Boards feel like a broken record of shallow ideas and funny cat pictures.