Better to be lenient in what you provide, and strict in what you permit.
Or, another way, don't let a few bad apples spoil the harvest.
As for letting /msh continue; if it's that important, where you just couldn't bear to see it public, then use email. Or IRC. Or the telephone. Or write a (gasp) hard-copy letter and mail it. Why kill the fun of the occaisional amusing accident (and I've had my share) to save you the convenience of hitting the HOME key and looking before you hit "Talk"?
- email Ozymandias