What is this thing called podcasting?

This term I have been working with a group of students to gather data for my research project on podcasting. I have made a mash up of the final podcasts these students made for me and posted it here for you. The assignment I gave the students was 'tell the world what this podcasting thing is, and why you like doing it'. Please head over to their podcast page and leave them a comment on how well they have done at http://www.room5.podomatic.com.
I have finished gathering data for my project now and the next term will be spent interpretting my findings. I will post further podcasts as I do.