Ian's last point is very important. You're asking for examples of success when our whole case is that this idea is still operating with one hand tied behind its back.
I hope you accept that because of the taxation law limitations and the securities law limitations, which have been alluded to by the previous questioner, you're not seeing the full panoply of what you could have if you were looking for success.
One example we know of is the community housing project in Toronto known as Regent Park. It was redeveloped recently—and in fact it's still being finished; it's not completed yet—by a private sector contractor who won a bid.
The redevelopment was financed by an issue of bonds, and the source of payment for those bonds was the full rental that some people, even the community housing, pay according to their means; the partial rental that other people, including some city councillors, pay according to their means; and the subsidy that is provided by the city for community housing for people who really need that service.
So there's a revenue source, there's financing to produce some quite improved buildings. If you are familiar with the previous status of that community housing development, the new one is gorgeous compared to the old one. And that I would paint as a successful example of social finance.