this is yet another web-based presentation tool. Compared to other similar tools, the two major advantages are:
i) a simplified syntax for slides, similar to reStructuredText
http://en.wikipedia.org/wiki/ReStructuredText, and ii) a simple server-side backend so that multiple "listener" can have their slides move in sync with those of the speaker.
Resizing using the browser's controls (ctrl +/-) generally works well to adapt to different screen resolutions, and i am trying to add support for tablets and phones and similar devices.
There is also a simple "edit" mode in which you can modify, still within the browser, the textarea that contains the presentation, and rudimentary support for plotting, and some simple transition effects.
sttp shares the disadvantages of this family of solutions: if you have images or other embedded content the presentation is not a standalone file; export-to-pdf is weak; no math; etc. - but it can do the job for small presentations, and especially it really enforces you to have a consistent slide style across the presentation