If someone is ignoring you it does not impact you at all except you cannot reply to them on their posts (you can reply to them on a post someone else has started and they have commented on, but presumably they will not read what you posted). You can always read them fine and attempt to reply to their posts when they are the OP but then you get the message you are on their ignore list. I don't ignore anyone so I don't know about what happens if you are an ignorer.