Spreading the Wealth: Holiday Tipping in New York  It's the
holiday season in Manhattan and it's time to tip your doorman
and your dogwalker... and the hairdresser, mailman, building
janitor, teacher and anyone else who helps you get through the
day. Nowhere else are so many people dependent on so many
others.    It's no secret that living in New York City is
expensive, but it's not just the pricey real estate and fancy
restaurants that can put a dent in your checking account. It's
the hidden costs, things like holiday tipping, as NPR's Luke
Burbank found out.  LUKE BURBANK reporting:  Sloane Crosley is
what you might call your typical New Yorker. She works in
publishing. She says she makes OK money but not really enough to
live lavishly. She rents a studio apartment in Manhattan. So it
might surprise you to learn why she's pulling 50 bucks out of
the ATM.  Ms. SLOANE CROSLEY (New Yorker): I am getting this
money to tip a woman who has exercised a lot of labor in
straightening my hair over the past year or so