Well I have to say the Webinar was a bit of a disaster for me. I registered to attend and got email acceptance on 23/3 and spent an hour trying to get in no joy so many pitfalls. Really fed up. Yes I tried different browsers. 
Sad me. No Pi no webinar no CE mark yet. Oh well sits back and waits some more.
One day my parts will come. 
I've often had no luck with Webex in other browsers than IE - just curious if any of you have have better luck with any other webinar programs that you've used and prefer over Webex? Any "open source" suggestions get bonus points! 
I'd like to share with the team here who hosts the webinars so we can look at using it in the future.
Thanks for your ideas and feedback!
Nicole, element14 Community Manager
Anything that's based on Internet standards is always well supported on all platforms, so really all it requires is to decide what media types you want to provide and then pick Internet standards that implement it. This is typically more "hassle" than just buying in a proprietary integrated solution like Webex, but it almost always works better across the very diverse populations of the Internet.
As an example, to implement something like the recent "Webinar" (a word that takes days off my life every time I hear it), you want at least an audio/video stream and a bidirectional chat channel. The main Internet standards for these media types are very well known (RTSP, RTP, IRC, XMPP) and extremely widely supported by both proprietary and open source server-side solutions.
I know very little about proprietary ones, but open source streaming of both video and audio is typically done with Icecast, while ircd or ejabberd are commonly used for the chat stream. (I'd also add an additional audio-only stream for accessibility, or for those who want to listen on the move and don't have video-capable smartphones, or simply as fallback when video fails.)
The main fly in the ointment is that you need a local techie to configure it all, instead of just paying a company like Webex. OTOH, a techie is just a contract hire away, even if you have no in-house tech to spare. 
Morgaine.
PS. Just found another open source video streaming system --- http://goalbit.sourceforge.net/ -- don't know anything about it though.
Thats terrific thanks. Now I can delete all my screen dumps from the You Tube video 
Thanks for another great link.
Its all starting to come together now slowly but surely.
I have HDMI lead, TV, USB powered port, Power supply, Ethernet lead in router ready. Keyboard and mouse.
One DebianPi SD card ready and one FedoraPi SD card ready.
Just need that perishing fruit pastry and I'll be a happy many.
Good luck all hope you ALL get the first batch 
Ray
