> The only issue is that the stamp may have been designed with non-free
software, and the postal service may use non-free sorting systems. Hopefully,
they don't have any system to read the letter.
Honestly, I think that is over thinking this. I couldn't care less how they
made the stamp, I just want to make sure the glue on its back is not
poisonous xD
Unfortunatly it is a known fact that many times letters are read and people
never notice it =S
But yeah, that would be a much more sane world to live in, a world to
comunicate with our own words instead of pixels. lol