It’s Official! NIRP has arrived! EU takes Central Banking into the Twilight Zone

From NYT 06-05-14  http://nyti.ms/1mWn4Jw

As nominal interest rates go negative what does it even mean??

FRANKFURT — The European Central Bank cut its benchmark interest rate to a record low on Thursday and, in an unprecedented attempt to stimulate the euro zone economy, said it would begin charging interest on deposits held by the bank