I don't think this is what the OP was asking. I have noticed that for some people who I'm not friends with, I can like their photos, but for others I can't (even though I can view them in both cases). I can't find any setting to control this thoughI have this same problem, did you ever find out how it is done. I have stuff on public and people comment on them but I see others who have their pics on public but as a non friend of theirs i can't comment. Why is this?
public posts accessible to comments on facebook
facebook