Currencies have value. Commodities have value. Under our economic system, the distinction you make is no more than a phantom of the mind.
We can print increasingly large amounts of money, and have. We can mine increasingly large amounts of metal, and haven't. It's going to take a while for the copper mines to increase enough to make up for the way the dollars have been increasing. Figure on a lag time of five years minimum, and that's assuming that we don't do something really, really, stupid, like fight a war with the Moslem world.
Currencies are a means of measuring and thus exchanging values. They have no inherent utility value themselves; that has been so for ages.
This is only true of Fiat money.  If we remained on the gold standard or any hybrid with silver, their would be implied value (i.e. dollar for set amount of gold).
Well, of course. Gold or silver currency is just...gold or silver.
Where on the financial pages can I find a list of utility values (in your sense)?
Utility values are derived by any given person in the absence of money.  So if there were utility values published I think they would be completely open to interpretation.  
Nowhere. That is the point.
So why should I worry about them, if I am interested in what the oil price will be? And why should I be concerned about the high volume of trading in derivatives of oil contracts?
You will need an understanding of derivatives and wikipedia is great for that.  Basically derivates have created a lot of "stuff on paper".  Businesses engage in off balance sheet activities like credit swaps where two companies basically swap credit access so on net they are both better off, but barely.  Bur barely when talking about billion of dollars, turns into a lot.  So when we are trading 10 times the amount of oil available, it shouldn't take much more to figure out the consequences.
My question was a rhetorical one. I cannot for the life of me see why the price of oil should be likely to fall sharply, just because more futures and derivatives of oil are traded than there is physical oil being delivered.
I see you're point.  I think futures trading may have sped up the price increases a little faster and now that the long term implications are becoming more and more clear, the futures traders are going to make that much more money as they ride this down.
Because when there is a sudden rush to close open positions in futures and other derivatives and the "paper" stuff overwhelms the "real" stuff 10-to-1 there is no demand for the excess from the physical trade (eg hedging) and therefore a plunge ensues. Since prices for the "real" stuff today get set to a very large extent by marking to the futures market (the tail wagging the dog) the price of physical "stuff" collapses as well.

The game can be played from the other direction as well, of course; and it has been - oh boy has it ever...

But back to the original point, what hellasious describes most likely won't happen as the finite nature of oil will become too large to ignore.
Your answer would explain a strong movement of the price in any direction. But it does not address my question, because
  1. You still have to show empirically that trading has actually become more volatile with the growth in derivatives volume. By the way, I doubt this is true.
  2. You have not shown why we should in the near future expect a sudden rush to close open positions.
Emperically volatility in the current market is actually at it's lowest levels in decades.  I can't find the right chart though.  I will keep looking.  

There will be no suden rush to close position due to the finite nature of oil. I think most people here would agree that there will be no price collapse sans some unforseen catastrophic event that produces more oil.

I'm sorry, but at this point I respectfully suggest you refer to a good book relating to the basics of commodities futures and options trading. The questions you pose indicate you are unfamiliar with most all basics and while I would be otherwise inclined to provide such an education I am afraid the medium is not appropriate.

Sincerely,
Hellasious

Well, if the medium is not appropriate, you could at least refer the readership here to a good book relating to the basics of oil futures trading. I think that would suffice for providing such an education.
Whenever you want to learn anything head on over to wikipedia.com  It may not be completely accurate it will provide a very thorough basic foundation for most queries.
Any search in your favorite internet bookseller will turn up dozens of books - pick whichever you like best. Alternatively, if you want to get more serious about this, NY Inst. of Finance has several appropriate courses. Again, this site is obviously not the medium for commodities training, so I must take a pass at providing it myself, here.

There is a comment further below about all the futures contracts being used for hedging and therefore their current huge volume is immaterial. That is false for two reasons:

  1. Hedging involves the transfer of risk: futures trading is a zero sum game. If you win, I lose. So, if you are a producer and sell 1.000 oil contracts short to hedge from its price going down someone else has to assume that risk. That someone is called a speculator. A market needs both, otherwise it cannot function. There are plenty of speculators in this market. How many?

  2. Assume that every single barrel of oil that was produced and exported in the world was hedged daily. That's some 50 million barrels, or 50.000 contracts in the futures market(1.000 barrels each). The current daily volume in NYMEX and ICE in futures alone is abt. 700.000 contracts (including gasoline, htg oil, etc). Adjust for Sat. and Sun. and it comes to 500.000/day. That is extremely excessive vs. every conceivable hedging requirement and a good measure of just how rampant speculation is in this market, right now. And that is before we take into account the regular OTC spot oil market, listed options and other OTC derivatives. This market is hot and frothy that we should call it..cappuccino.

There are a heck of alot more dots to connect to show the full picture, but I have already taken up way too much space, for which I hope you forgive me.
Fair enough. What is the daily volume of Nymex/Ice oil futures trading, excluding all the refined/distilled products such as the the gasoline and home heating oil you mention?

I agree that speculation is certainly influencing the current market. I am just not convinced that it is either hugely significant or necessarily a bad thing.

Can you provide some simple historical data so that one might compare the current level to the year 2000? 1995?

Just the crude oil is currently abt. 570.000 contracts/day or 410.000/day adjusting for Sat. and Sun. You should not deduct the products however, since they all come from the same barrel of oil. But it is still huge, even if you do deduct them. In 2000 it was around 180.000 and in 1995 around 120.000 - both oil only and adjusted for Sat and Sun.

Rampant speculation is extremely significant in shaping prices (just remember dotcoms) and as to good or bad, it depends. Extremes such as these are never "good", in that it is never a good idea to let the tail wag the dog. Or allow Enron (and several Wall Street prop desks) to set prices for electricity in CA - if I may draw an extremely timely parallel.

It is very possible that every contract relates to a real barrel of oil. I cannot see how it could come to pass that there were more contracts than barrels. If 410000 contracts are sold per day then that translates to 410 million barrels. World oil consumption 83 million barrels so about 5 to 1. However the same contract could be easily sold 5 times in a day. This is the cause of the high trading volume. Look at share volumes.. Since the internet boom volumes have risen dramatically however the total number of shares issued in some companies hasn't changed. Furthermore, it is likely that it is because due to the very low spare capacity, oil has to be incredibly efficiently delivered around the world, this means that at any one moment one refinery might need more or less from different suppliers but overall there is very little room for mistakes, resulting in contracts changing hands on a very regular basis.
Oops sorry i'm being foolish. We are talking about futures contracts so there are 72 days worth of contracts at one time, ie 83 million * 72 = approx 6 billion barrels. If 410 million barrels worth are traded daily that is 14% of total contracts. This level of activity is required for the logistical reasons quoted above as well as speculation.
Why not ask the powers-that-be at TOD if you can put together a guest post on the topic?
A guest post from a pump-and-dump (or in this case, short-and-dump)artist? That'll be a first!
Get back to me when you think of answers, eh, Mr. Expert?
Who cares if derivatives oustrip phys assets, most expire anyway and simply used as a hedge during their life.
That's the point.
It might mean that the amount of speculation in the oil trade has increased considerably. The logical result is larger volatility. Personally I wouldn't be so surprised if oil retreats to $50 or less in some panic driven sell-off. Why not? Recent pieces of information suggest that the market is not so tight to sustain those prices (yet), especially if Iranian saga settles down (my prediction) and the scheduled projects come online (also very likely, IMO).

IMO we often forget that PO is an event measured with decades; in the meantime there is enough room for many boom & bust cycles.

You've mentioned two events that might cause oil prices to retreat, although a crash seems highly unlikely. I can think of a 100 events that could cause oil to go much higher in a very short time (terrorist attack on oil facility, bad hurricane season, Iran invasion, domestic terrorist attack, runaway inflation, etc.) It's not just the supply/demand issue (although that is compelling), it's also the fact that so much of the world's oil supply is located in politically unstable areas of the world. Unless peace breaks out all over, I don't see oil prices declining below $60.
I don't care what the crude price is I see a price floor in the STL area at maybe $2.50 and that might be low.  I just don't see it ever being cheaper than that.  The barrel price doesn't translate well to most people.