Podcasting involves creating digital audio files that are published online and can be downloaded to MP3 players. There are two main types - enhanced podcasts include images and URLs, while videocasts contain both audio and video. Podcasting allows information to be shared in an exciting new way and gives students active participation in content creation. Some advantages are that files can be accessed anytime and provide motivation for students, while disadvantages include potential distractions and time needed for uploading large files.