I also agree, the rule of thumb is four points per slide. I admit that I violated the rules myself for slide 3, open source history, which has SIX big bullets and sub bullets. Looking at it again, I'd move the "free" "open source" bullet out to a separate slide called terminology with "freeware" and "shareware" also on it. This does not have to result in something that's dumbed down and content free.
Notes are where you put all the details. They remind you of what you wanted to say, make the presentation intelligible later and give you a place to write down good audience questions and other feedback. They should also be trimmed down for legibility much more than I made the notes to slide 3. Iterations take out the excess. The more you give the presentation, the more feedback you get and the more you realize exactly what you are trying to say and exactly what words get the point across. Open Office, by the way, does a great job of exporting presentations to html. Notes are exported by Open Office's html writer, which also makes index and navigation frames. If you have named your slides, you get a the index is easy to follow and your readers can jump to the point they want. Medium and high quality exports look great.
