Have you ever seen a piece of "ASCII art"? They're pictures made up of text characters. You've probably heard that one pictures is worth a thousand words. In this case, a 256 x 192-pixel graphic is worth (at least) 350 text characters, which, in turn, can facilitate many new logo connections.
Harris, J. (1990). Logo graphics by (electronic) mail. Logo Exchange, 8(5), 12-14.