But although targeted advertising is the most obvious application for geolocation, it has many other uses.

ECONOMIST: Geography and the net

Google uses data in the same way, but it has the big advantage over Facebook that many uses of Google are based on an intent to buy something.

WSJ: Crovitz: Will Regulators Unfriend Facebook?

Oil: Oil has many, many uses apart from fuel and it is these that should be explored.

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The first, known as the "pencil defense, " requires that Napster show it is a tool that has many noninfringing uses, like a pencil or a VCR.

CNN: Napster takes the defensive

But though the program has many legitimate uses, it also makes finding a pirated movie as easy as searching a hard drive.

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While many people may use it for gaming, it has a wide variety of uses.

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The modern state had its uses (and may still have some) but in order to justify its existence it has to take many decisions out of the hands of those who are most suited to make them.

ECONOMIST: New world order