OS X Permissions (again)_OT

[Rod Clifford]

Those w/ knowledge of UNIX:
If in an office environment where shared files need to be accessed
Should the owner be set to the "user name" or "nobody"? (if that is 
possible)

and group (those that are allowed to share/copy/replace folders in your 
public folder):
what is the difference between "staff" and "guest"?
If you log on as a guest with privleges to read/write it seems the term 
"guest"
would be correct.

Thanks, Rod