They're most likely all shill/sockpuppet accounts created and used by one guy, especially cause you see one of them go offline, and the other goes online right after, aka PizzaTraveler is online now, and all others are offline. It's really pathetic, but that's how some people are.
By using your logic, at the moment right after btc-mike will go offline but you will stay on, i can say that you are the same guy, just because you are online now, but the other guy is offline. *facepalm*
Stop this game, don't act like a little troll.