Philips energy saving lightbulb

Bought this Philips energy saving lightbulb from Tesco yesterday. This 20w bulb will provide the equivalent of 100w brightness. Enough to light up the room clearly yet saving a lot of money in the long run. Mine is named Tornado. Must be due to its spiral shape. Doesnt work with a dimmer switch. So, make sure you get the one that provides you with the correct level brightness, especially if you are going to use it as a secondary light for the bedroom. I heard electric tariff rates will be rising again next month, haimai? As if not high enough meh. I do my bit so save as much as i can la, watudu...