Not that most of these things are that unique, in the right circles. But I suspect they're rare among my circle of friends and readers.
( Sanitized for your protection )
Footnote: Hastur in a barbed-wire merrywidow, I'm learning to HATE Semagic. I am continually being surprised by its versatility in finding new and inventive ways to do exactly the WRONG thing, frequently in ways that blow away the formatting of (or completely garble the contents of) an entire post. If there's a way to screw up any non-trivial operation, it seems Semagic will find it. It's mostly safe in the raw-HTML mode, but doing any formatting in the WYSIWYG mode is just asking for it.