It's too bad the Bubble Guru is not free. I thought it was at one time. Is the Tech Talk still on for Saturday still on? I was planning on coming, but I may not be able to stay until noon. Would that be okay?
With your work in Education Technology, I recommend you take a look at Wiziq's virtual classroom and authorstream's power point presentation platform. Both are web based platforms, have a bunch of features and free basic service. Here’s a public class recording you might find of interest.