Podcasting is a method of publishing audio and video programs via the Internet, allowing users to subscribe to a feed of new files (usually MP3s).
“Podcasting” combines the words “broadcasting” and “iPod.”
It became popular in late 2004, largely due to automatic downloading of audio onto portable players or personal computers.
The term can be misleading since neither podcasting nor listening to podcasts requires an iPod or any portable player.
Podcasting does not involve broadcasting or sending out of an audio, since citizens need to point software to XML-tagged file to pull it down to their computer or portable device.
2001
UserLand founder and RSS evangelist Dave Winer responded to requests from customers Adam Curry and Tristan Louis for a way to deliver video or audio with their RSS feeds. Winer added a specific enclosure element to what was then his company’s RSS specification, then to Radio Userland, a blogging system incorporating both a feed-generator and aggregator.
October – First iPod released
2003
September 2003 Winer creates RSS-with-enclosures feed for his Harvard Berkman Center colleague Christopher Lydon, a former newspaper and television journalist and NPR radio talk show host. For several months Lydon had been linking full-length MP3 interviews to his Berkman weblog, which focused on blogging and coverage of the 2004 U.S. presidential campaigns
October 2003, At the BloggerCon Conference Kevin Marks demonstrated a script to download RSS enclosures to iTunes and synchronise them onto an iPod.
Adam Curry announces he is working on a project to allow automatic download of mp3’s into iPods.
2004
January – Ipod Shuffle Release – Podcaster producers start using the 5 second announcement of Podcast name and date/number to aid people with players without screens.
February – 12, 2004 – Possibly the first use of the term podcasting was as a synonym for audioblogging or weblog-based amateur radio in an article by Ben Hammersley in The Guardian.
June – IPod Mini Release
August – Adam Curry releases his iPodder Apple Script into the wild
September – Fellow blogger and technology columnist Doc Searls began keeping track of how many “hits” Google found for the word “podcasts” on , when the result was 24 hits
ipodder.org created.
podcast.net created
October – Detailed how-to podcast articles had begun to appear online
The BBC began a trial with BBC Radio Five Live’s Fighting Talk
podcastalley.com created.
December – www.thepodcastnetwork.com created.
2005
January – BBC trials were extended to BBC Radio 4’s In Our Time. January 2005 also saw CBC begin a trial with its weekly national technology column /Nerd.
April – the BBC announced it was extending the trial to twenty more programmes, including music radio and in the same month Australia’s ABC launched a podcasting trial across several of its national stations.
May – the trend began to go the other way, with amateur podcasts becoming a source of content for broadcast radio programs by Adam Curry, Christopher Lydon and others
June – Apple added podcasting to its iTunes music software, staking a claim to the medium
July – U.S. President George W. Bush became a podcaster, when an RSS 2.0 feed was added to the previously downloadable files of his weekly radio addresses at the White House website
August – Adam Curry’s Podshow, a Miami Beach-based company focused on podcasting, raises over 8 million dollars in funding.
September – the first podcast encoded in full Dolby 5.1 Surround Sound, was created by Revision3 Studios with their 14th episode of Diggnation.
PodcastAlley.com purchased by Adam Currys Podshow Networks.
A Google search for podcasts returned more than 61 million hits
October 10, 2005 Yahoo launches podcasting
Today – 13th October – A Google search for podcasts returned more than 70 million hits
Apple Releases Video iPod – allows TV shows to be downloaded from iTunes store for US$1.99
Styles Of Podcaster
Adam Curry – “The PodFather”
Professional broadcaster making a big comeback.
Very polished.
<–MTV 
The Dawn And Drew Show
‘Just a couple of punks’ who started something big.
Rough. Raw. Not ‘tradional’ broadcasting..
Kirsten Sanford and Justin Jackson – This Week In Science
Current Public Radio Broadcasters & Bloggers
Added podcasting which now is a major part of their audience,
The Rachel Maddow Show
Current Public Radio Broadcasters & Bloggers
Added podcasting which now is a major part of their audience,
Cory Doctorow
Science Fiction Author.
IT Activist.
Publishing books online for free.
Creating own Audio Books.
Engadget Podcast
Technology blog.
Added Podcast.
James McParlane's Blog 