Do you really think the problem is lack of understanding? I mean, a reputation system is a pretty easy concept and I can't imagine there are people out there w

Do you really think the problem is lack of understanding? I mean, a reputation system is a pretty easy concept and I can't imagine there are people out there who just don't know what a Karma system is. Which is the problem. If you understand what a karma system is than you understand you're doing damage to a person's actual reputation by down voting them. So the obvious conclusion for anyone who understands the concept of karma points is that down voting is an act designed to cause harm to the person not to express disagreement with the idea. I can't imagine a person who doesn't have at least a subconscious understanding of such an obvious result so I don't think a notice when someone down votes would change anything