Innovative Philips SlimStyle LED bulb goes on sale for $9.97

Innovation is alive and well in the LED lightbulb industry. SWITCH, for example, is making LED bulbs that are filled with liquid to help dissipate heat (instead of a metal heat-sink), and Philips found a way to drop the heat-sink altogether by flattening the bulb in such a way that there's a large surface area and the individual LEDs are spaced out enough to keep cool.