Most people have technology they'd like to use more fully: their SmartPhone, DV-R, computer, etc. But they don't know how.
For example, their computer has slowed down, they're using only the basics of Microsoft Office, LinkedIn, or Facebook, and they're paying too much for phone service, Internet access, or web hosting.
Then there's the stuff people are afraid of buying because they're not sure how to set it up: big-screen TV, home security system, surround-sound audio system, home computer network, etc.
Plus there's technology the people don't even know about but could make their life better.
Enter the personal geek, who makes house calls: does an audit of the person's needs, buys the stuff cheap on the Internet, installs it, trains the person on their new and existing techno-items, and provides ongoing support, as needed.
I think it's a self-employment idea that, in the right hands, has a high probability of success.