Graffiti etiquette depends on the writer...
say a prayer...have a shot, or two before you go.
personal property and small businesses off limits. and places of worship
pretty much any " Public" property is mine for the taking.
ask to borrow paint never take or i will stab you in the neck.
your crew gets hemmed up....you get hemmed up as well.
NEVER STEAL FROM YOUR CREW.
always watch ur crews six.
and last but not least...always save space.
this is just my etiquette.