Podcasting K-12

The New York Times has a positive, if brief, story on K-12 students and teachers making and using Podcasts.

The piece includes a quote by "Daniel J. Schmit, an instructional technology specialist in the college of education at the University of Nebraska at Lincoln" that nicely sums up the value of Podcasting. "It teaches [students] to do research, to communicate in print, to speak effectively and grab attention with sound." Of course, uploading the audio to Apple's site or another site really helps students get a sense of audience.

My students are doing multi-modal composition this semester and they may choose to do audio essays, I'm wondering if others have done similar things? If so, what have your experiences been?