If you're an Office user, you've probably got a Microsoft User Data folder in your user's Documents folder. Personally, I dislike this, and had used this older hint to make it invisible.
Yesterday, while catching up on numerous RSS feeds, I stumbled across this entry on the blog of Panic's Steven Frank, which offers an alternative solution. In a nutshell, to get the Microsoft User Data folder out of your Documents folder, just move it to your user's Library/Preferences folder. Do this while Office isn't running, and the next time you launch an Office app, the folder will stay right where you put it.
When I checked the original hint, this method is noted in the comments, but way down at the bottom, so I figured it was worth sharing again in a more obvious fashion.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20060228051625893