Robert Cheetham, here. I've been running JGarden.org since 1996. JGarden.org is an online database on the historical and contemporary gardens of Japan as well as the gardens located outside Japan that have been inspired by the culture. It is a non-profit, educational web site that is currently in its 5th iteration, but the current version's been around for a few years, so I'm itching to update it.
But JGarden is not what I spend most of my time on. I live in downtown Philadelphia and run a small software company, called Avencia, that specializes in web-based software for geographic analysis. My wife and I don't own enough land to have a garden, but before finding my vocation in geographic information systems, I studied Japanese in university, lived in Japan for 4 years and then got a graduate degree in landscape architecture (JGarden.org started out as a grant application to support a proposed summer research project).