With the arrival of HTML5+C33 the browsers are getting more attention because the new possibilities.
One example of the possibilities are the proliferation of frameworks, tools and libraries to create HTML presentations to run in the browser. No need to transform your presentation from PowerPoint or Keynote to any portable format, the content is plain HTML.
Knowing the previous projects I start looking for other alternatives I found a great range of projects: Landslide, html5-slideshow (see a demo here), pow (see in action here) or DZSlides, a one-page-template to build your presentation in HTML5 and CSS3.
Within this maremagnum of possibilities the confusion is assured: which tool is better? which is easy to use? which has more effects? which one is more flexible and/or extensible? which want has more followers and/or supporters? which one will survive in the future?
Currently, all these tools are great but they all are oriented to a web developer user with strong knowledge on HTML and CSS.
The next step is clear, adapt to plain users (a user without web technologies knowledge). The tools needs an editor to help in the creation of the slides, like PowerPoint or Keynote.