I just now down-voted an answer, which is really not an answer.. Here are the screenshots that says it all.
Here it shows that I down-voted and put a comment.
Now below is the rep change notification that I got:
This is a very strange rule(?) that I loose a hard-earnt point for down-voting some that doesn't even deserve to be on the site. I am not concerned about the reputation points at all. Its more about the feeling that: You aid to clean up the trash from this beautiful site, and in turn loose a point. #Unacceptable!