Lightblubs in the homes of 2007 Winter Weekend GIV students, faculty, and staff:

We use

2950

lightbulbs in our homes:

974 fluorescent
1976 incandescent

This is only 33% percent of the all the bulbs that could be fluorescent

(each fluorescent bulb uses ~25% of the electricity of an incandescent bulb,
and last about ten times as long)

(here are some frequently asked questions at efficiency vermont.com)