It happens to all of us. So what do you do?
I voted for "other" because if I had to bring out food for every stray cat I see here, I would be busy for the rest of my life Emotion: sad There are just too many. But otherwise I would bring it some food, just not feed it around my house otherwise it would keep coming back (and I have enough cats as it is hehe).
I bring out some food usually. Sometimes they don't eat though. Probably they are domesticated cats just walking outdoors.