This is a rule I have broken without knowing it since I learned the rule in high school. First, it says use all CAPS.
I never heard of such a thing!!! I only use all caps when making a special point, it's like "YELLING"... to me.
It then says, do not use any punctuation. When did this happen? What about my precious periods and commas? What am I supposed to do instead? I have to use periods and commas in addresses.
Find the Rules for Writing Addresses here:
OR, the URL: http://pe.usps.gov/cpim/ftp/pubs/Pub28/pub28.pdf