I'm looking to set up a series of live, streaming videos in a high paying niche. I have the experts ready to go on video. I have interested advertisers. And I have the ability to get an audience.

How do I integrate advertising into a webcast like this? I run a live Q&A from my server (using openmeetings), what do I do for advertisers? Something more than holding up a sign in front of the webcam?

I'm suspicious that a simple ad at the front and end of the session is not sufficient.