Satellite, drum-beats, semaphore,
Telephone, email - tell me more;
Diplomatic, postal, morse,
Audio and visual next, of course;
Heliograph, heart-sounds, radio,
Extra-terrestrial? some say so.

The medium is the message,
To some extent rings true;
But what we say and what we send
Depends on me and you.

Mill Field

http://www.poemhunter.com/poem/gen-communicating/