Podcasts, a flora of methods for increasing learning and decrease teacher workload?

Abstract

Educational podcasts, audio- or video feeds/files
with learning material, are becoming abundant and are
available through several different distribution platforms e.g.
iTunes-University, YouTube and web-sites such as TED.com.
The quality, length and purpose of these podcasts vary
considerably, which may be part of the reason why conclusive
strong evidence of their general effectiveness in promoting
learning seems to be lacking. There is, however, anecdotal
evidence e.g. taken from my own experience of using podcasts
for five years, which indicate that podcasts have a huge
potential in making lives easier for teachers as well as students.