No hiding place

IN AMERICA alone, people spent $170 billion on “direct marketing”—junk mail of both the physical and electronic varieties—last year. Yet of those who received unsolicited adverts through the post, only 3% bought anything as a result. If the bumf arrived electronically, the take-up rate was 0.1%. And for online adverts the “conversion” into sales was a minuscule 0.01%. That means about $165 billion was spent not on drumming up business, but on annoying people, creating landfill and cluttering spam filters.

Which might, in the modern, privacy-free world of sliced and diced web-browsing analysis, come as something of a surprise. Marketing departments gather terabytes of data on potential customers, spend fortunes on software to analyse their spending habits and painstakingly “segment” the data to calibrate their campaigns to appeal to specific groups. And still they get it almost completely wrong.