So I had an firstname.lastname@example.org ID for my iPod Touch and a email@example.com ID for my iPhone. I was using both of them differently and separately. I was using the game center also separately for these 2 IDs. But recent somehow the 2 IDs are linked. I used a separate nickname for both IDs also but now somehow i cannot use the nickname for my firstname.lastname@example.org and it shows that the said nickname is used by some other ID. Plus even though I log-in on my iPhone from the icloud ID, it somehow gets connected through the me.com ID. Let me know if someone can help me. Thanks in advance.