What the....?

This is from a widget I started using this summer to find the cheapest gas prices in the neighborhood. It's called "Gas"...catchy name, eh?

Anyways...back then I seem to remember gas being over $4.00 per gallon. This snapshot captures the latest prices. From what I remember, OPEC refused to up their output this summer when all the western countries started begging them to do something about the $140 per barrel oil prices. So if they did not increase supply, and overall demand really didn't drop all that much, why has the price of oil/gas dropped like a rock?

I hope someone somewhere made a ton of money of off this. I would prefer to think that somebody manipulated the market and made a couple of million bazillion dollars than to think that the price of oil is like a spin of the roulette wheel.