Podcasting is a means of distributing audio and video programs via the Internet that lets users subscribe to a number of files, also known
as "feeds," and then hear or view the material at the time they choose. A feed is usually in the MP3 audio format.
"Podcasting" is distinct from other types of online media delivery because of its subscription model,
rather than one-time delivery. A series of files are delivered because subscribers want to
get the information regularly.
A portable audio player is not required because the podcast is downloaded to your computer.