How I Use It
I use Prezi as an option for student-generated final PBL presentations. Positive: Bright, colorful, interesting and easy to use. Negatives: Sometimes it is difficult for students to include sound, and sometimes the presentation is difficult to watch because of the layout (seems like swooshing or creates motion sickness).
Most of the time, students will choose to do a Prezi instead of a Powerpoint. More advanced students, however, seem to prefer some of the movie-like apps. It is appears to be user-friendly (the users think this), but sometimes the product is difficult to watch.