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Originally Posted by anilv
Theres one school of thought that says that blipping the throttle as you switch off will just leave unburnt fuel in the cylinders
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With CIS or carburetor, you probably can de-oil the cylinders to some extent this way, by killing the ignition while fuel is still coming into the engine. Sounds like a great way to increase wear on startup, especially if you are going to drain the oil and it will take several seconds to develop oil pressure when you restart.
With EFI or diesel, the fuel will cut off while the engine is turning, so I don't see any effect, except for possible harm to a turbocharger if you get it going fast and then turn off its oil supply.