Joe,
A sticky on just this, has recently been started here on IIS:
Video Astronomy - sticky link.
The thread is just in its infancy, yet is growing fast with contributions.
Curiously, while Australia has some of the most high profile practitioners of VA in the whole world, its over all popularity is limited here in Oz. In Europe and the US is popular as access to dark skies is more difficult for a lot of people, and VA can punch through the light pollution of urban skies.
The quality of cameras for VA have leaped well beyond the CCTV cameras from three years ago, so too have the hardware connections and software for computers. Some people do not have the time to dedicate to astrophotography. They have a scope, they cannot get to a dark site, and even if they do they don't want AP, and if they are under urban skies, they still want to see something, and see it NOW. VA is the solution.
Put it this way, I've been able to see the Horse Head nebula live on a monitor with a C8 from my home in Sydney, even without having totally tamed my camera. Just a 17 second net exposure, and then move onto something else. Today's new cameras will allow for an even smaller aperture to do the same, with a clearer image too. Just a modest scope, VA camera and portable DVD player as a monitor. No computers anywhere to be seen, unless you are sitting in your lounge room controlling the scope,
I love doing outreach evenings, and I use VA along with visual scopes to compliment the observing experience. Novice eyes just don't stand a chance to see what we are privileged to see under dark skies. Yet folks would like to see a colourful nebula, or the spirals of a galaxy through a scope. They ain't gonna get this through a visual scope, but they can with VA. I also use this to make people aware of the problem that light pollution is. It is sad to hear that there are some cities in the world today where no stars can be seen due to the light pollution.