From Wikipedia:
A webcast is a media presentation distributed over the Internet using streaming media technology to distribute a singel conten source to many simultaneous listeners/viewers.
From Webopedia:
v.) (1) To use the Internet to broadcast live or delayed audio and/or video transmissions, much like traditional television and radio broadcasts. For example, a university may offer on-line courses in which the instructor Webcasts a pre-recorded or live lecture, or an enterprise may Webcast a press conference in lieu of or in addition to a conference call. Users typically must have the appropriate multimedia application in order to view a Webcast.
(2) To use push technology, to send Web-based information to an Internet user.
(n.) The data transmission that results from one of the above methods.
Netcast is another name for Webcast.
Through my class and this website I hope to help you get up and running with your own webcast for your school and/or organization. My desire is to make this an easy and enjoyable experience.