nostr:npub1y3pjarhyce7grew92h8myw6zszv5jzqzd25t0j9tg6rh63x9kepsffxdw0 Hi, the icon shows the relationship between you and the post’s author. If it’s a colored square icon, then you are not following them, and they are not following you. If the icon is dimmed, the relationship is unknown.