That's a great article. I work in the housing projects here locally and I've seen a lot of really good things happen. The friendly cats and kittens are really vulnerable but the adult ferals tend to do really well. I know quite a few who are at least 5 years old, probably older.
What's always humbling for me is to see the sacrifices that these folks who don't have two dimes to rub together will make to see that "their" cats are fed every day. And while many are suspicious of me initially, they're almost universally grateful to finally have the cats spayed and vaccinated.