I can prove lutchmaen u=845150 and ZahlenSalat u=845607 are Alts of Kozan u=309031 (
-32: -5 / +0 ) who's been trying over the last 24 hours to "sell" BitCoins, but doesn't know how to sign from the Wallet they are in (all three Alts no less) however, I've found on the 26th of April 2016 that Kozan signed his own Vanity Wallet
1KozanzpaCuzYqKYotEw8Wwx522A8ct4dV
Full details here:
Selling 6 coins https://bitcointalk.org/index.php?topic=1481254.msg14932072#msg14932072