Depending on the technology being used, participants may speak and listen to audio over standard telephone lines or via computer microphones and speakers. Some products allow for use of a webcam to display participants, while others may require their own proprietary encoding or externally provided encoding of a video feed (for example, from a professional video camera connected via an IEEE 1394 interface) that is displayed in the session.

Real-time text chat facilities such as IRC appeared in the late 1980s. Web-based chat and instant messaging software appeared in the mid-1990s. The PLATO computer learning system allowed students to collaborate on networked computers to accomplish learning tasks as early as the 1960s, but the early networking was not accomplished via the World Wide Web and PLATO's collaborative goals were not consistent with the presenter-audience dynamic typical of web conferencing systems.[8] PLATO II, in 1961, featured two users at once.[9]
In February 1998, Starlight Networks[22] released StarLive! (the exclamation point being part of the product name).[23] The press release said "customers can access familiar Web browser interfaces to view live and pre-recorded corporate presentations, along with synchronized slides. End users can communicate directly with the presenter using real-time chat technology and other Web-based collaboration tools."
Don’t feel you need to do a weekly series. A monthly series works just fine, though twice a month is a nice middle ground. And if your schedule is too busy (and let’s be honest, of course it is…), then use a webinar platform like EverWebinar to host an automated webinar. You won’t even need to be there. Heck, you could be kicking it in Belize with a Pina Colada, watching the sales roll in while your webinar is running without you.
Using Webinar software participants can share audio, documents and applications with webinar attendees. This is useful when the webinar host is conducting a lecture or information session. While the presenter is speaking they can share desktop applications and documents. Today, many webinar services offer live streaming options or the ability to record your webinar and publish to YouTube and other service later.