How I Use It
I would use this as a way to present short bits on specific topics. It's a fun way to give information to students that is not your standard lecture or powerpoint.
I really like Prezis. My students tend to gravitate toward making a prezi over a simple powerpoint whenever they have the option. The movement can be a little distracting to some, but overall, I think the ease with which students and staff can make something creative to present information is well worth it.