I know I'm a voice in the wilderness, but you'd definitely miss me as a customer, if a product (and especially its sales letter) was all video based. I'm on dial up - no choice, my geographic area - and videos are the bane of my existence.

My writing schedule is so busy, I have to really squeeze time in for me. Waiting for a video to download... and download... just doesn't cut it. I'm off to something I can access more easily.

Video screw up audio "classes" too. The presenter starts showing a slide show or visiting websites - and my connection's overloaded, crashed, gone.

I love people who provide transcripts or other text-based alternatives.