Oh, thanks for that link - I'd seen it once and lost it! We have a reasoning skills book, "Thinking Toolbox," that I'm going through with my sons, and we'll be looking at "Fallacy Detective" next!
I've been perusing that site - it would seem that all the logical fallacy examples seem to come from the conservative side. That doesn't invalidate his logic, but it is telling that he never presents a liberal logical fallacy.
(Funny, he would call the above, "Arguing from the negative", and he would be right, but it still doesn't mean he's not a lib!) Who you gonna believe, logic or your lying eyes?