Launch Daemon Best Practices?

FROM : Karl Moskowski
DATE : Tue Mar 11 23:30:00 2008

I'm working on a utility that has to be running even if no one is 
logged in. A bit of research leads me to think I should implement it 
as a launch daemon, with a separate configuration UI.

Am I on the right track, or is there a better approach? Any pointers 
to sample code?

I assume I'm going to have to get the GUI to write settings to /
Library/Preferences/, and notify the daemon of to reload changes via 
distributed objects. Is it possible to get NSUserDefaults to write 
there (instead of ~/Library/Preferences/)?

Thanks.

--Karl.