Nothing unusual at all. One ID and it is my correct email address.
I find it quite fascinating that I have been privy to an entire conversation and the participants had no clue I was watching. I did ask them who they were, a couple of teenagers, neither of which having a clue how we might have gotten linked. I don't know them, they don't know me. The only thing we have in common is the same area code.
As I have a house full of super texters, I couldn't resist showing them all how easily their conversations could be, shall we say, not quite as private as they might expect.
I am not overly concerned, I dont use Imessage myself and I really need to reset it back to factory anyway. I am just very very curious.