A New Word I Can't Stand

(from Wikipedia)
Webinar: A webinar is a specific type of web conference. It is typically one-way, from the speaker to the audience with limited audience interaction, such as in a webcast. A webinar can be very collaborative and include polling and question & answer sessions to allow full participation between the audience and the presenter. In some cases, the presenter may speak over a standard telephone line, pointing out information being presented on screen and the audience can respond over their own telephones, preferably a speaker phone. There are web conferencing technologies on the market that have incorporated the use of VoIP audio technology, to allow for a truly web-based communication.

In the early years of the Internet, the terms "web conferencing" was often used to describe a group discussion in a message board and therefore not live. The term has evolved to refer specifically to live or "synchronous" meetings.