In my experience I find that good literature in any field of thought rarely -- if ever -- uses pictures. Watchtower literature, on the other hand, is littered with illustrations. Makes a JW think twice of the quality of their message, no?
Speaking of pictures, has anyone noticed the Watchtowers fascination with vivid colors the last few years? Whenever they have a photo shoot of JWs they make sure (usually) that they are wearing bright colors. (Non-witnesses, "evil people", "bad association" are generally in darker colors) Witnesses also always seem to be eating fruit in their photos -- especially big, bright fruit like watermelon or cantelope. Just my pedantic observation.
Needless to say, they're slick marketers.
Bradley