Drive Journaling. What's up widdat?

[John Griffin]

I just downloaded a highly recommended utility called "Jaguar Cache Cleaner"
and am trying it out. One thing it does is enable something called Disk
Drive Journaling. Well it sounds kinda impressive, so I checked it.

The thing is, I haven't the faintest idea what this does! The only thing I
noticed is that it won't let me run fsck in single user mode without doing a
force command "-f". Can anyone enlighten me on this one? Is it a good thing
or a bad thing?

Jg