Online Word Of Mouth

What happened? Online word of mouth. When Into Thin Air first came out, a few readers wrote reviews on Amazon.com that pointed out the similarities with the then lesser-known Touching the Void, which they praised effusively.

Other shoppers read those reviews, checked out the older book, and added it to their shopping carts. Pretty soon the online bookseller’s software noted the patterns in buying behavior—“Readers who bought Into Thin Air also bought Touching the Void”—and started recommending the two as a pair. People took the suggestion, agreed wholeheartedly, wrote more rhapsodic reviews.

More sales, more algorithm-fueled recommendations—and a powerful positive feedback loop kicked in.

Particularly notable is that when Krakauer’s book hit shelves, Simpson’s was nearly out of print. A decade ago readers of Krakauer would never even have learned about Simpson’s book—and if they had, they wouldn’t have been able to find it.

Online booksellers changed that.

By combining infinite shelf space with real-time information about buying trends and public opinion, they created the entire Touching the Void phenomenon. The result: rising demand for an obscure book.