It isn’t just a good habit to reply to each and every post on Facebook – it is the bare minimum you can do. If you ignore Fan posts on your Page, you are simply giving the message that you don’t care. Even if it means you have to go Like each post, do it.
PF Chang’s set s a great example for this. If you go to their Page, you’ll notice that they reply to every post, without fail. And that, as we said, is just the bare minimum you can do!