That's an interesting idea -- it might make a good page on the Less Wrong Wiki, consisting just of his "three" examples and everyone can add links to LW articles explaining the wrongness.

Personally though, I'm still stumped by most of them. :)

Such a page could also be useful for pointing out areas which haven't been discussed here yet. For instance, there is surely much to say about "The proposition that 3 is the fifth root of 243 is a tautology, just like 'An oculist is an eye-doctor.'", but I can't think of any LW posts talking about it.