Putting value on your audience's time
A strong post from Rowan on Powerpoint. He makes excellent points with extremely valuable supports.
If your presentation consists of a PowerPoint and the File Properties tell you that the audience will be spending more than half of your allotted time reading your slides, I would recommend staying home and sending an email.
http://fortifyservices.blogspot.com/2009/02/putting-value-on-your-audiences-time.html