I didn't realise that there was such a thing as a space conference. Found this on a Wired article in my RSS feed.

The recently held Space 2006 Conference in San Jose, California was a bit about selling a life (living?) in space. But the problem with living in space is gravity.. if not for anything, it is going to be a big problem keeping your food down.

It is likely that the Moon (one sixth earth's gravity) and Mars (three eighths) are unlikely space real estate destinations.