Prezi is a presentation platform that organizes a presentation a more nonlinear way than PowerPoint . . . a feature that can be useful when using a presentation in more informal discussion format, rather than a traditional lecture format. That's because Prezi gives you more options for unplanned movement back and forth in your projected material.
One of the coolest features it's unique ability to zoom in and out on different parts of your material. This gives Prezi a unique visual quality not found in other presenters.
Prezi presentations can be easily narrated and can be embedded in a webpage, email, or blog . . . or in your learning management system.
The best way to introduce yourself to Prezi is to try it out. Oh, did I mention that it's FREE? Just go to the Prezi website and get a free account and start playing around!
And be sure to hit the Explore tab, to see all the crazy kinds of Prezi presentations that can be created.
In the mean time, you may want to watch this video to get a feel for the whole Prezi concept.
In a nutshell, here's how Prezi works.