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Presentation Tip: Donut Graphs

For the last year or two I have noticed newspapers and magazines using donut graphs more often to show proportional data results. Donut grap...

Please complete the 2013 Annoying PowerPoint Survey

Recently I launched my biennial survey of audience members and what annoys them about bad PowerPoint presentations. This is the sixth survey...

Presentation Tip: Three uses for a black slide

In a workshop last week in the Boston area a participant noticed that I effectively used black slides during the workshop and wanted to know...