(^_^) is very important, because (^_^) is in itself a sense of unity beyond the human comprehension. Its a sign so powerful even people, who dont believe in (^_^) are feeling its pure might puring into their soul. The Kaomoji (^_^) has many friends all similar in shapes and meanings and with (^_^) they form the unity of the Kaomji which is so essential, some signs may be usless because of them.