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You left out a detail about CFLs ("Compact Fluorescent Bulbs," October 2008): Turning them on and off frequently shortens their life span. Are the bulbs in your test left on all the time?
Brian MacDonald Lynn, MA
Are CFLs that work with dimmers cost-effective, given that they cost close to $10?
Nancy Fredericks Shelter Island Heights, NY
All bulbs that we test are turned on for 3 hours ...