CEO wants to make live announcement to 75 locations at the same time. In the past they've organised a 75 line conference with Telstra for a boatload of cash. I suggested that we livestream a private event on youtube, however, since we operate on a proxy, the network would be crippled with 75 HD video streams at the same time. Requirements - Live (or slight delay) simultanious broadcast to multiple locations (it looks like audio only would be the only option. - Easy to use for all sites (i.e. browser interface) Desirable: - the ability for people to ask questions at the end, either via microphone or typed Any ideas? I thought mixlr.com might be an idea, but the chat requires an account.