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   Why not use recommendation engines (like Amazon's)?

These are ingenious and highly adaptive, but they have limitations.
	--  If I've bought a frying pan, they can recommend a pot--or even olive oil.
	--  What if I'm looking for an accountant?
	--  Their pattern recognition depends on accumulating sales data.
	--  Nothing gets recommended until it's been bought a significant number of times.
	--  The technique is much better suited to established items than to unfamiliar ones.
	--  The Internet's most natural rich-content niche (for now) is lesser-known material.

 

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