Here's a cool website to see how many CFLs have been sold in your ZIP code.  Brought to you by EnergyStar and Yahoo!, it's a map of the U.S. that grades states by shades of green.  In this instance, the lighter your state, the more CFLs.  Illinois is about in the middle--#28.

Find interesting info on saving energy and see how enlightened your ZIP is by visiting www.18seconds.org.