Invisible Comments, now with video. Answered
I've just noticed - if you enclose a comment in <pointy brackets>, they don't show up on your "comments" page. You just get an empty space with the name of the person who posted it.
I guess the system thinks that the contents of <pointy brackets> are supposed to be code of some sort, but it's an odd effect anyway.
As an aside - what is the best you can do with the image below?
(The second version is a PNG file, just in case you'd prefer.)