Online help via voice chat? e.g., a Ventrilo server

Back in the early days of Magic: The Gathering Online (MTGO) there was an active gaming community where we had a Ventrilo voice chat server for which I wrote a how-to guide to get newbies up and running. Usually I just hung out in my own room unless anyone needed to ask me anything, and there was always a room full of people to ask questions of. With a combination of voice and text sharing, it made communicating ideas quick and easy.