Shortly after I took that photo, I put a collar on Bramble, matching Lily's, with "I am microchipped" on it. She'll have a few weeks to get used to it and, when she does go out, it might deter people from feeding her. I'm not certain by any means, but I did wonder how she coped so well all the time she was away. She did eat most of the food I left out for her, but I've occasionally seen other cats eating it, and she hasn't lost an ounce.