Yeah... My house serves as a depot for the local cat distribution network. Our neighborhood has a lot of strays and we consistently put out food in an effort to build up enough trust to get them spayed, neutered, or provide some much needed wound/healthcare.
It's a catch and release program, but sometimes they decide the release aspect is optional. The old or sick cats usually decide that being pampered indoors makes a lot of sense, so we've gotten to show some love to some rough old-timers before they pass.