You must have figured out by now that Wally is actually loved by everyone, probably as much as Dilbert or even more. Over a period of time, you tend to empathize with him. That's why your comment against Wally got you a -8 (current count as of 0914 hrs GMT 26/07/09). Mind you, I considered the comment neutral :)
Extremely well crafted phrase - "Subtle as a sledge hammer"