Guy's rule works great for the people in the room. However, it actually makes the experience crappy for those who are reading the slides online after, or who don't have access to audio or video.

In today's example, there were about 75 people in the room. however, the slides have already been viewed by over 1300 people online (in <8 hours).

So, if you're designing for the room -- use Guy's advice.

However if you're designing for the vast majority of people who will read your slides online, it's probably better to include most of the core material -- and that you'd be accused of reading bullets if given in the room.

so the challenge is to provide the material in somewhat complete form in the presentation, and yet still try to be entertaining/educational for the live performance.

all the above aside, i make no apologies for violating almost every rule of good presentation form & guidelines.

but then again, it works for me... and it's distinctive & unusual, and thus memorable. which achieves the design goal.

I think that if you're designing for the people who read your slides online, you're not serving either audience - neither the people in the room (who undergo death by powerpoint) nor the people online - who are forced to look at powerpoint bullet points rather than an actual written document with sentences, paragraphs, etc.

i've had collectively over 100K views by my presentations online, and ~10K downloads. for me, it's contributed significantly to the work that i do with startups.

note that my presos generally contain a lot of images, not ONLY a lot of text. but my point is that sometimes more, not less, is more. at least for async remote audience.

for people in the room, your live performance, not the slides, should be primary.

your mileage may vary.