I have written before on the variety of on-line applications for building presentations. Now Microsoft is letting us look at a preview of their new Office Web Apps. Two modules are available at the moment: Excel and PowerPoint. To join the preview program, follow this link for detailed instructions: How to join the Microsoft Office Web Apps technical preview.
A few things to note:
The rest seems pretty automatic.
I followed the procedure, but was not very lucky as I started to build my first presentation. I got source code appearing on the slides, just by entering some simple text!
This is the result (click on the screenshot to enlarge):
Hopefully the problems will be fixed and I will be able to do further testing.