Webcast Examples

Virtually all the major broadcasters have a webcast of their output, from the BBC to CNN to Al Jazeera to UNTV in television to Radio China, Vatican Radio, United Nations Radio and the World Service in radio.
The earliest webcast equivalent of an online concert and one of the earliest examples of webcasting itself was by Apple Computer's Webcasting Group in partnership with the entrepreneurs Michael Dorf and Andrew Rasiej. Together with David B. Pakman from Apple, they launched the Macintosh New York Music Festival from July 17 - July 22, 1995. This event audio webcasted concerts from more than 15 clubs in New York City. Apple later webcasted a concert by Metallica on June 10, 1996 live from Slim's in San Francisco.
In 1996, Apple webcasted the Recording Academy GRAMMY awards.
On August 13, 1998, it is generally believed the first webcast wedding took place, between Alan K'necht and Carrie Silverman in Toronto Canada.
A notable webcast took place in September 1999 to launch NetAid, a project to promote Internet use in the world's poorest countries. Three high profile concerts were to be broadcast simultaneously on the BBC, MTV and over the Internet: a London concert at Wembley Stadium featuring the likes of Robbie Williams and George Michael; a New York concert featuring Bono of U2 and Wyclef Jean; and a Geneva concert.
More recently, Live8 (AOL) claimed around 170,000 concurrent viewers (up to 400 Kbit/s) and the BBC received about the same (10 Gbit/s) on the day of the 7 July 2005 bombings in London. The growth of webcast traffic has roughly doubled, year on year, since 1995 and is directly linked to broadband penetration.
The first free Sunday morning webcast of a live worship service in the United States was initiated in January 2005 at Wekiva Presbyterian Church of Longwood, FL; this webcast ministry is ongoing.
Connecting Media was one of the first companies to do live webcasting using a special IFP Van (Internet Field Production) dedicated to webcasting.
Today, webcasts are being used more frequently and by novice users. Live webcasts enable the viewing of presentations, business meetings, and seminars etc. for those that telecommute rather than attend. Such sites offer live broadcasting as an affordable alternative to attending physical public speaking events expanding the viewing audience to anyone that has an internet connection. Other live webcasts are held completely online independent of any offline component. Webcast content network sites can enable users to find content that interests them by searching the site.
Private users can use social webcast forums such as YouTube or commercial webcast forums such as BrightTALK. Usually no sophisticated technical experience or equipment is required and content (usually limited to 10 or 30 minutes) can simply be uploaded.
Live sporting events, both local and national, have also quickly become frequent webcast subjects. With regard to smaller events such as Little League, amateur sports, small college sports, and high school sports, webcasting allows these events to have full audio or video coverage online when they may not be able to book standard radio or TV time. Websites like Meridix Webcast Network, Texas Sports Radio Network, SportsJuice, and others allow local schools, teams, and broadcasters to produce their own webcasts, which also have the advantage of being accessible to anyone with an internet connection (i.e. relatives several states away), unlike the range and market limitations of terrestrial radio and TV.

source:Wikepedia