We've been feeding stray cats that come to our front porch for years now, and two have remained constant. Unfortunately quite a few have gone missing, but they haven't been affectionate or non-timid enough to get homes for.
Over that time, we've seen some kittens and two appeared just recently. I was able to capture both (all black, fluffy, with just a bit of white on their chests) and bring them in, but they were only about 6 weeks at first and needed their mom. Also, the owner of this house hates cats, so we're lucky we're able to have them at all and I was forced to put them out.
I feel bad and want to keep one (unfortunately, only one is around anymore), but I doubt we'll be able to. I've brought it in a couple of times, and it's been good/affectionate then, but has also hidden under a bed for a while spurring worry it'd go to the washroom there.
I guess I'll need to try to get a home for it since I can't keep it. It's upwards of -30 out there sometimes, and we've just got a crate with a towel and some hay between the door and the wall for them to sleep in.