4 categories of audience --- Really interesting way to break it down - and hard to hit all four sometimes given different interests and modes of communication. But at least it reassures when there are very few in the room actually listening that they are not the only audience. NB UK government debates have this at heart with empassioned speeches at times to catch the twitter ground with a soundbite - not focused at all on their fellow MPs!

Source author: Teresa Hanley thanley7@gmail.com