Speaking coach Jerry Weissman suggests during your presentation you use polling to get to know your audience. For example, post the question: "Who here is in..." give out multiple choices and count up the number of people in the different areas. This will give you a sense of what your audience will be most interested in hearing.
Polling,
Tim Wilson
Professional Speech Coach
Free speaking tips at: http://speakingquicktips.blogspot.com
