I said for most things I have no preference, but for meta, I expect a response. However, none of that really covers what I meant, which is that if I am trying to engage the OP in discussion, then I expect/would like a response. Sometimes that can happen in feedback on a fic, or a personal post, and sometimes I comment on a meta post not really trying to engage discussion but just to agree or whatever. But on the whole, meta posts are most likely to be the sort of post where I am attempting to have a discussion and thus expect a response.