I recently revisited Prezi and set up a new Edu account, which provides the ability to have private, secure content for free (note that Prezi’s created using standard free accounts are public).
500 mb Storage Space
Make prezis private to secure your content
Use your own logo instead of Prezi’s
via Pricing | Prezi.
Also noted that Prezi has a new PowerPoint import feature:
There are also new 3D background and fade in zoom features. In case you are wondering what Prezi is all about, either see the short video below:
Or see this slightly longer, but more informative video:
Bottom line: Prezi is an exciting new (ish) information viewing and sharing service based on a freemium model, which is a harbinger of several future trends in information & content discovery. Give it a whirl!