An effective presentation will be realized if there are an effective moderator and an effetive presenter. For this, I have attend an interesting course. This course handled by National Institute of Public Administration (LAN-Jakarta) by the days March 30th - April 3rd.
Effective Moderator
An effective moderator can drive the meeting be a wonderfull meeting. He should give background,
Effective Presenter
Presenter should think simple and do simple think. Remember, that the aim of presentation is that the audience understand what you talk about. So, choose a simple word, an interesti

Suggestion
Preparation before your moderating or your presentation will contibute your success.