…Considered harmful to Wordpress, anyway.
I was trying to type my previous entry, about getting Fotobook working, especially the second bit about getting the update script running automatically through my crontab. The problem was… I couldn’t type wget!
It’s kind of an important part of the crontab line; that’s the command that has Unix load the given page. But for some reason, every time the word wget was in the post, I got an error when I tried to publish my edits. I’m guessing that Wordpress tries to execute wget when it finds it (for reasons unknown; a bug?). So I spent longer than I care to recount trying to figure out how to disguise wget in my code, but have it appear normally on the entry so it could be copy-pasted into Terminal.
The first solution I looked for was an HTML tag like to make it not interpreted, and just presented literally. Didn’t work. And my search for a better tag was fruitless, though CDATA looked good for a while. (Guess it doesn’t interpret in XML.)
Then I tried inserting things inside wget. Putting a “|” in the middle obviously worked, but it’s ugly, and I’d have to explain it. So I looked for some latin-1 character that would be invisible.  was close, but for some reason, when it copy-pasted into Terminal, it eliminated the “g“. A 0×0 .gif image would’ve worked, but my stylesheet gives every image padding plus a border, so it looked like a white box in the middle.
Then the lightbulb— any HTML tag that wouldn’t get rendered into something visible would work. I tried <>. That showed up as <> (weird). </> was invisible, but when I went back to edit, WP had gotten rid of it as obviously useless. So then I just used bold tags.
wg<b></b>et worked. Hurrah.
Kludgy, but it works. If you have a better, more elegant solution, I would love to hear it.