How I Use It
I offer Prezi as an option for some student projects and assignments. I always give a clear list of required elements (text, images, attribution, links to other resources, etc.). It's a good alternative for students who are just getting their feet wet with presentations.
In my classes, Prezi hasn't blown anyone away since perhaps the first time someone saw it. It's just another version of a powerpoint, and my students generally want to do something a little more creative to showcase their thinking (for which I am very grateful).