http://www.nycvisit.com/content/index.cfm?pagepkey=1272
[Click on "Savings Card"]
You can print it out and use it like the buttons referenced in the New York Times story. It's good at the Museum of Sex and the Pokemon Store!!!
This is the page for information about the discounts available:
http://www.nycvisit.com/content/index.cfm?pagepkey=1270