Recently I have been looking at a couple of free on-line alternatives to Powerpoint for producing attractive and effective visual aids to support a presentation. There are now a whole host and how many will survive only time will tell. Thankfully this morning I found a great post that gives you links to 13 great looking alternatives.
So far I have only really played with Sliderocket and I have to say I really like it. If you have tried any of the others, how about posting a comment here and sharing your experience with your fellow presenters.