I wonder what would happen if someone tried to wire up a European 220v light bulb to an American 120v light socket? The active current regulation chip would presumably try to keep the current the same, and the voltage across each LED would be half, so as long as you're hitting the minimum threshold voltage, you should be driving those LEDs way less. Pick up a 100W equivalent bulb, it's suddenly putting out 50W equivalent, I'd guess you'd have a bulb that lasts more or less forever.

Or maybe not?