in reply to
Superstitions? Hmm. After two books, countless lines of code, and training several hundred people I couldn't think of anything I did out of a fear of the supernatural. After reading the examples given, I gave it a bit more thought and came up with a few specific to Perl programming. (I have all kinds of OTHER superstitions with programming in general...) Distinguishing these from style is a bit tough. If I cross the line, excuse me. These are what I do, YMMV.
Now I break any/all of these when I'm trying to make a point, compress code that's just a side-show, obfuscate, etc..
Update: typo repaired, few late additions