[sopooneo]

It's interesting, but you're going to get a lot of human complication involved. You'll need administrators with the expertise to vet all those types of people. If money is flowing through you, customers will expect you to guarantee quality. And guarantee you don't send a criminal into their house to entertain their kids. I did essentially this just for math tutors for the math portion of the SAT for high schoolers. By far the most work was in hiring and managing staff.

If money is not flowing through you then the product is Angie's List.