Which Easy, Again?    There are many reasons to be outraged, dismayed, and bewildered by the anniversary of Katrina, but what I’m still puzzled by is: how did "NOLA" become a (helpful) abbreviation for "New Orleans"?  Is there another New Orleans I should be careful not to mistake for the Crescent City?  To conserve precious characters, should we start referring to "NYNY", "SFCA", or "LVNV"?  Just askin’.   (Wed 30 Aug 2006, 21.28 PST)     @ #