There are all sorts of reasons you might want to send someone a message. You may want to tell that special someone just how much you care; you may want to announce the birth of a child or some other special occasion. You could send a card or you could send the message into space on a laser beam (insert Dr. Evil laugh here).
A company called Sentforever.com is offering to send messages into space for free in celebration of the 40th anniversary of the moon landings. The messages are transmitted with a laser beam at 670 million miles an hour into deep space.