If the "!" is there, that means so is the person. Some of them are in REALLY Akward places. One guy I was trying to find had the same colour clothes as the wall he was standing against and I just walked past him 50 times. An other was standing on a bridge above my head but I didn't even know there was a bridge up there.
I was not expecting to wake up to the news of a Persona fighting game. That is all kinds of awesome. The Golden sounds like it will be great, and Persona 5 is more or less confirmed to have ended pre-production? Squee.