Has been shown to be somewhat unreliable. A developer's toolkit allows building custom applications. HTML and JAVA based system. Must have Sametime Server installed on the server. They sell the server and provide the java applets for customization.
Scheduling is somewhat tricky.
707.823.0117 Provides a real-time, interactive data conferencing system combining audio and desktop conferences. Low cost plug in with hosted solution. Designed for large group web broadcasts and presentations. Presentations can include streaming video and audio, PowerPoint presentations, Web tours, and application demos. Voting, polling, and instant messaging between participants is also supported.