As my friend said, "If your going to have all the text on Powerpoint and just read it, print the slides out and send us home early."
Besides too much text and reading it verbatim, here are a few more ways to irritate your audience with PowerPoint.
Mistake #1: Small print which requires binoculars
The first time I used an overhead project I used size 14 font. The back row desperately needed binoculars. Now I use 30+.
Mistake #2: Slide full of text
Usually, you want your slide be like a bill-board on a highway. People need to be able to grasp the content in two seconds and return to driving or in this case listening.
Mistake #3: Leaving the slides on the screen the entire time
Every remote and computer has a blank screen button (b on the keyboard). Flash the slide up, make your point, and blank it out. Now people can focus on your presentation.
Keeping it up won’t really irritate your audience, but it will distract from your presentation.
#4: Flashing slides too quickly for those taking notes.
A teacher in college gave notes filled with entire blanks. Every point was to be copied down. Since he talked three times faster than we wrote, he often switched slides before we had a chance to write them down. Entire class was irritated.
#5: Pictures drowning out the text.
A picture is worth a thousand words. Maybe two thousand. Too often an unrelated picture is used for a background and the text is drowned out. What may look clear on computer screen, can be nearly invisible on a big screen.
Keep black on light background, and white on darker background. Using shadows will make text stand out.
Power-point is an amazing tool for good. Avoid these mistakes and you can avoid irritating your audience.