Madam, - The recent energy awareness campaign launched by the ESB is to be welcomed. However, I was amused the other night to see a large billboard advertisement urging people to use energy-efficient lightbulbs and turn lights off to conserve electricity.
The billboard was lit up by old-fashioned tube lighting which appears to be kept on at all hours of the day or night. - Yours, etc,
RONAN MURPHY, North Circular Road, Dublin 7.