It's just like bladesworn holds a mirror and everyone see himself in the mirror. But somehow, the mirror could only show a single person, but not everyone.
Wow. I haven't been here in years, literally. How in the world did my account get used to spam the boards? >_<
LOL. Man, I remember when this feature was introduced (And I still use it below my name XD ) I was sooo confused. It was fun. Ah the good old days