Murat has posted that address first before the other member's in your post, so that doesn't make them Murat's alt, i can go to Theymos' profile or that of LoyceV and copy their address and post it somewhere in the forum, but they posted it first and so it does not make me any of them.
Not so. If I remember correctly, in the past there were almost no written campaign rules about joining multiple accounts. So using someone else's address is not a good initiative to damage someone's reputation or for revenge, at least it wouldn't have crossed the members' minds at the time.