The webcast is something of a flashtastrophe:

  * Chrome is not officially supported
  * Need to allow pop-ups
  * Chat widget does not do copy & paste
  * Chat widget takes 10 seconds to scroll
  * Shockwave Flash process using 350% of CPU
  * Webcast crashed and had to be restarted from the broadcasting-side
  * Chrome repeatedly asking if I want to kill unresponsive webcast tabs

That said, they have a decently slick UI for handling screen sharing, slides & chat. It's just that the implementation is a nightmare.

O'Reilly & on24 need to rethink this.

[edited for formatting]