China and India, the two most populous countries, have had unparalleled industrial growth in the last 4 to 5 years which is an obvious multiplier on the Demand side.
Iraq’s Supply is not back to pre-war production. Its future Supply is uncertain.
Venezuela’s President Hugo Chavez is on a program to “nationalize” oil industries with a probable result of near-term inefficiency in Supply.
The U.S. has announced programs to reduce Demand, but these results are in the future and yet to be seen.
OPEC (Oil Producing Export Countries) have no self-interest in the face of growing demand to keep pumping their oil Supply to the level necessary to flatten prices. OPEC also has some difficulty in revving up and slowing down on production due to the international uncertainties.
Few, if any, countries are not increasing their Demand.
Oil is finite.
Supply and Demand all the way, with up’s and down’s due to refinery problems, wars, extreme weather, shifts in world alliances that are changing rapidly.

because our monkey leader i mean bush spends so much oil and the shity war and crap, and there aint much oil so price becomes higher, and also the more they price gas the more money the government gets…
its all a fucked up plan by fucked up governments….

If we drank gasoline instead of putting in our cars, nobody would complain.
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Because of the increase of oil prices.

There is a lot of things that effect the price of a gallon of gas.
The price of crude oil fluctuates all the time due to anything from problems with the wells, problems with the ships, bad weather causing ships to be late, there can be problems at the refinery’s, there can be shortages of the chemicals needed to refine the oil into gasoline. The dictators that run the country’s that sell us the oil may create false shortages to cause America to have economy problems. Fluctuations in our own stock market can cause oil prices to rise and vice verse The largest part of the cost of gasoline is the TAXES we pay. The “Oil Company’s” were supposed to have record profits last year but the government made out even better on the State and Federal levels if we could convince them to lower taxes we would be better off.
Gas prices go up due to increased demand Holiday weekends etc. So to answer your question any little thing can cause the price to rise. The price could have gone up because of something you did last week it seems like they use anything they can use as a excuse to raise the price but there are some legitimate reasons.

supply and demand

Look under The BUSH the answer is there.