I've just started reading The Long Tail by Chris Anderson and it's a stunning read as far as I've got.
For anyone who doesn't have it on their bookshelf (for shame!) it's a look at the changing world of online retail; where niche products deliver greater profits than traditional popular 'hit' products due to the reduced cost of supplying a vast array of goods.
In doing this Anderson considers retail right back from local stores through catalogue purchasing up until the arrival, and subsequent monopoly, of the supermarket chains. At each stage in this retail evolution the choice available to consumers multiplied hundred-fold up until the era of iTunes and Amazon when shoppers are able to select from a range of literally millions of products. This will then beget a broader range as consumers choices become increasingly niche.
So the lesson to be learnt it would appear, is that consumers will spend more money given a greater choice of products.
Well, a recent article in the Guardian would massively disagree. It looks at the negative impact of supermarkets providing an increasingly niche slection of mainstream goods, such as jam and cheese. The article discusses how choice can actually inhibit consumers spending.
And to attack the cliche that people always want more choice, he deploys ... jam.
"Economists know all about choosing jam," he says, ambling down an aisle with 73 varieties. He describes an experiment where academics set up a tasting booth in a store in California. On some days they put out six kinds of jam, on others 24. When the booth had 24 types, it was mobbed - "there was more colour, more excitement". But it was the sales that were truly remarkable: with six jams on show, 30% of customers bought a jar; when 24 were out, only 3% did. "Jams are hardly complex things, but people saw 24 stacked together and thought: 'I have no idea how to deal with this.'"
I'm not sure The Long Tail is likely to be undermined by the work of the behavioural economists in the article but it's certainly food for thought.

You'll probably need to blow this up to see the full artistic detail.