Let me say right off the top that I don't believe the yard serves as a good dogsitter, even a nicely fenced yard. That said, dogs can and do spend a lot of time in yards in the company of people, and the people often seem to have a lot of questions. I've written a book on the subject you may or may not be aware of - Dog Friendly Gardens, Garden Friendly Dogs.
I am in the process of putting together a companion book, and would love to hear from dog people with their questions about dogs cohabiting with yards and things you do with dogs in yards and any related issue. Please feel free to pass this along to other doggie people.
I am currently thinking about, should I ever have enough spare cash, putting in a section of artificial lawn on which to put my agility equipment. I need to do more research, but it's an appealing idea. What technological innovations attract you - plastic fences? tennis-firing gizmos? dog doo digesters?
I keep up on all the natural nontoxic product solutions to lawn problems such as insects and weeds, so that will receive good coverage. If you have any particular favorites or tips, I'd love to hear them.