Ever heard of Professor Mehrabian? Some of us may have been on courses that mention his work. Mehrabian's research shows that 55 percent of our communication is visual - our facial expressions, 38 percent our tone and only 7 percent connected to the words we speak. Mehrabian was as much talking about consistency and congruence of message as he was outlining impact of style. Our need for great visual impact along with positive tone is often used as the base for building up our stage presence in the workplace, and why not? Work on these factors is bound to bring benefit.
For the moment though, I would like to focus on the 'words' element.