Great list. However, I don't think #10 is a "usability crime". (I just thin the author wanted 10 items and threw that in for a round number.)
I can see how abusing the use of justified text is a problem, but labeling all justified text "unusable" is just plain silly.
For example, the "Tag cloud" on this very page is justified and that layout actually makes it easier to read, not harder.
Justified text, as rendered by a browser, can be difficult to read. The tag cloud isn't prose, it's just a collection of words at different sizes each. It's not quite a correlation.
I do agree that it's a bit of a stretch, which might be why it came in at #10.
I justify my text just to piss Adrian off.
I respect your logic.