The only problem I have with ferals is the thought that they may have feline AIDS which can obviously be passed on should they attack one of my domesticated cats. There are quite a few ferals around here, we see them jumping into the hedges as we drive down our lane. I get worried about Fred mainly, although it will be Henry too very soon, as he does get in some scraps but Im never sure who with.
As well as our 3 moggies, I also feed 2 cats who were abandoned by our neighbours when they moved. I'd love to do more, but frankly, I cant afford it!!!!