I'm way late to this thread, but while I agree with the notion that some notes just aren't worth saving, I can't tell you how many times I've had my ass / time saved by simply being able to look up that one piece of information that I only needed maybe once every few months. "Pick up milk" isn't useful, but "create that directory" is worth a lot to
someone.
In my most current job going on 5 months, I'm mostly a programmer, but I've also become something of a scribe because the documentation of their current environment setup is absolutely abysmal. One time, a coworker and I had been debugging a SQL Server SSIS package that kept failing on a new machine when there should have been no reason to fail, and for quite awhile had no leads. All efforts to look through stacktraces, logs, and the event viewer lead nowhere. All we knew was that it was some Excel error from what it was telling us. What ended up being the issue was that the following folder didn't exist:
C:\Windows\SysWOW64\config\systemprofile\Desktop
It's an empty folder, though. We were given absolutely NO indication that this was needed from our research, until my colleague remembered it one day after THREE weeks of trying to fix this damn thing, and all we needed to do was create a damn directory. My boss's face turned white when I told him what the fix was because he recalled having this same exact error bite them in the ass before.
This is the site in question that saved us now has a permanent place in our Wiki now:
http://social.msdn.microsoft.com/Forums/en-US/innovateonoffi...
(and yes, we wrote down all the information from it in the chance that the link goes dead :)