if people had to list there poker names, it gives a way to search and do history on them,
yes, someone can create another PO name
no, they cannot create another (are not supposed to be able to) poker skin name
I am only part way through this thread, but I can attest that there is a member here I have stopped 4 or 5 of their accounts in 2 weeks of them being banned and they had new names on the poker sites to play in our games, that easy.