Thanks for letting me know about the broken link, and for your advice.

I don't have many quotes, so my slides are mainly images and diagrams. I guess that the ratio of written talk/keynotes and amount of slides is so dependent on your field and topic. I can imagine several fields where reading would make sense, as you say, if there are lots of quotes. I've also seen so many hate the use of powerpoint in talks, but I fail to see how for example art history topics could be presented without any images.