Thanks for the feedback. We'll see if it is the microphone, the data compression, or if we simply need to speak more clearly. I hope that we'll replace the recordings with better, progressive download versions too.
Regarding the technology, it takes only a browser and either computer speakers or headphones to participate. WebEx may need to install an ActiveX controller, but it shouldn't be much to participate. (And we do have two Webinars this month that will be in the morning in Australia -- one is tomorrow.)