Another way is to pursue cause-based marketing alliances. This isn't buying based on where you live but on your association. You're not asking for charitable dollars. It's a business deal. It's enlightened self-interest for everybody.
Poor neighborhoods are also avenues for advertising.
In the public domain, we need to engage corporations that offer products and services that contribute to healthy communities. But that's only how to get more money for poor neighborhoods, agencies, and organizations. There are some serious limitations in the underpinnings of welfare reform, especially the concept of Work First. Most people on welfare augment their welfare by working because they can't live on it. There are several examples of how people are pursuing entrepreneurial approaches to helping people on welfare.