This just in from TreeHugger...
http://www.treehugger.com/bikes/there-bicycle-economy-two-cities-find.html

Summary:
"Portland, Oregon and New York City, two very different cities, are finding something similar about cyclists and pedestrians - they tend to spend a bit more money in local economies."

Nick Hein LCI# 1705
Director, Positive Spin
803 East Brockway Ave
Morgantown, WV
ph 304-276-0213