From Wikipedia

The term podcasting was invented by Ben Hammersley in the article"Audible Revolution" (http://www.guardian.co.uk/online/story/0,,1145689,00.html) from the February 12 2004 edition of The Guardian, used in context by Dannie J. Gregoire [1] (http://groups.yahoo.com/group/ipodder-dev/message/41) and made popular by former MTV VJ and Dutch weblogger Adam Curry's original [2] (http://ipodder.org)ipodder script. RSS pioneer Dave Winer describes succinctly the technology used to pull digital audio (e.g., especially MP3) files from websites down to computers and devices where the audio can be played back at a listener's convenience. The recovery of MP3 links from distributed weblogs and distribution of the aggregated list using RSS had been demonstrated by Stephen Downes's [3] (http://www.downes.ca) Ed Radio [4] (http://www.downes.ca/ed_radio.htm), launched June 9, 2004. Podcasting was developed, according to Curry[5] (http://ipodder.org) in August, 2004.

The term podcasting plays upon the terms broadcasting and webcasting and is derived from the name of the iPod portable music player, the playback device of choice of many early podcast listeners. While not directly associated with Apple's iPod device or iTunes jukebox software, the company did contribute both the desire and the technology for this capability. Podcasting is similar to time-shifted video software and devices like TiVo, which let you watch what you want when you want by recording and storing video, except that podcasting is used for audio and is currently free of charge. Note, however, that this technology can be used to pull any kind of file, including software updates, pictures, and videos.

Adding to a number of ad hoc, proto-podcasting techniques for automatically downloading audio files, podcasting proper became popular through association with blogs, the XML-based file format called RSS (Really Simple Syndication or RDF Site Summary), and the polling applications called feed readers or news readers that poll and download RSS files.

Blogs, often being self-published websites, provided a convenient means for individuals to self-publish audio files online. RSS already gave websites and blogs a means to summarize or list new content added to the site. Individuals already used RSS to poll websites for new content. Thus, the addition of audio file listings to RSS, and the addition of audio file downloading to RSS feed readers built upon the feed reader's existing methods for polling and downloading files, and upon the existing "reader driven" interaction with content publishers.

Podcasting is different from broadcasting and webcasting in that it "casts" audio not by a mechanism of centrally pushing audio out to listeners, but by the mechanism of the (distributed) listeners pulling (downloading) the audio files automatically. Podcasters publish (or "podcast") audio files, even in the likeness of radio shows, but it is the individual listener who initiates the "cast" through their subscription and automatic download of the audio program.

Podcasting also utilizes the combination of audio files and RSS to publish descriptive data and metadata associated with the audio. RSS files used in podcasting include dates, titles, descriptions, and links to audio files. These links to audio files within RSS, which are used by podcasting applications, are defined by the RSS enclosure element, supported by RSS 2.0 and RSS 1.x. The enclosure element originated in RSS 2.0, and all of the original podcasting proper applications were built to work with RSS 2.0 specifically.

Table of contents

Related terms

broadcatching, podcatching, podcaching, podience

External links


  • Podcasting News (http://www.podcastingnews.com/) - features news about podcasts and computer audio recording, a podcasting blog and other resources.
  • Anatomy of an iPodder (http://secrets.scripting.com/anatomyIpodder). A rough description of podcasting.
  • Yahoo! Podcasters mailing list (http://groups.yahoo.com/group/podcasters/). A mailing list for podcasters and podcast listeners to communicate about podcasting for the iPodder platform.
  • Wired News (http://www.wired.com/news/digiwood/0,1412,65237,00.html). Wired News article on podcasts (8-Oct-2004).
  • WebTalk Radio (http://www.webtalkradio.com/news/000017.shtml). Podcast: Time-shifted radio listening gets a new name (23-Oct-2004).


  • iPodderX (http://iPodderX.com). iPodderX, podcast receiver for the Mac. Handles audio, video, and still images.
  • iPodder (http://ipodder.sourceforge.net/). iPodder software.
  • jPodder (http://kualasoft.com/jpodder/): for Windows
  • BlogMatrix J├Ąger (http://jaeger.blogmatrix.com/). An RSS aggregator with podcast reception for Winds, Mac and Linux.
  • Doppler (http://www.dopplerradio.net/): Podcast client for Windows
  • bashpodder (http://linc.homeunix.org:8080/scripts/bashpodder/): Podcast client for Linux
  • Podcast button. (http://www.gtmcknight.com/buttons/search.php?searchstring=podcast)


  • POTKAST.com (http://www.potkast.com/). Handy directory of podcasts including BitTorrent, MP3, video and picture files. Download self created playlists.
  • Kedora TV (http://www.kedora.net/). Directory of video podcasts using BitTorrent.
  • Audio.WebLogs.com (http://audio.weblogs.com/). Lists the last 100 podcasts.
  • iPodderX Podcast Directory (http://iPodderX.com/directory). Full directory of available podcasts, searchable and browse-able by category
  • New Time Radio (http://newtimeRadio.com/). Guide to podcasts and other independent audio shows.
  • All Podcasts (http://www.allpodcasts.com/). Searchable full-text index of podcast titles and descriptions.
  • IndieFeed.com (http://www.indiefeed.com/). Free, indepenent artist music in single-serving podcasts.
  • LoudPocket (http://www.loudpocket.com/podcasts/). List of podcast RSS feeds.
  • OpenPodcast.org (http://www.openpodcast.org/). "A dynamically generated podcast to which anyone at all can contribute."
  • Podcast.net (http://www.podcast.net/). List of podcast RSS feeds.
  • Podcastbunker.com (http://www.podcastbunker.com/). Podcast Reviews, Podcast News, Links to Rated Podcast & More.
  • Podcast Central (http://www.podcastcentral.com/). List of podcast RSS feeds.
  • PenguinRadio: Podcasting Directory (http://www.podcastdirectory.com/). List of podcast RSS feeds.
  • PodCasters.org (http://www.podcasters.org/). Podcasting people, apps, technology, and news.Includes a list of podcast RSS feeds.
  • PodFly.com (http://www.podfly.com/). The Podcaster's Portal.
  • Podcat.com (http://www.podcat.com/). daily "best of podcasting" shows.
  • DownloadRadio.org (http://www.downloadradio.org/). searchable directory of radio shows turned podcasts.
  • PodcastAlley.com (http://www.podcastalley.com/). Comprehensive and searchable listing of 400+ podcasts.


  • iPodder.org (http://www.ipodder.org/): The resource for the iPod platform
  • PodCasting Avenue (http://podcasters.blogspot.com/). Blog about podCasting and its impact
  • I Love Radio .org (http://www.iloveradio.org/). Podcasting, radio, and blogging.
  • Audioblogs.info (http://www.audioblogs.info/). Info on podcasting and audioblogs.
  • Podcast (http://www.livejournal.com/community/podcast/). LiveJournal Podcast Community.
  • Matthew Bischoff's (http://www.matthewbischoff.com/mt/). Podcasting blog
  • The iPodder Documentation Project (http://blog.zemote.com) iPodder/Podcasting Documentation blog/podcast
  • podstar.com (http://www.podstar.com/). Podcasting news and reviews, how-to podcast, software and hardware tips.
  • podcastreviews.net. Podcast reviews.
  • Podcast Research (http://podcast.isthereason.com/). Podcast Research involves the critical study of the podcasting phenomena. Podcasters are invited to contribute!
  • foundsounds (http://socialcustomer.typepad.com/foundsounds). podcasting becomes eclectic.



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