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Riffle comes from the folks at Odyl, a service for publishers that includes the top six US book brands.

Two of the best new discovery tools I've come across are Riffle, a soon-to-be-launched Facebook app from New York company Odyl, which lets you tap into your friends' and expert recommendations, and the Underground Book Club, a monthly freesheet and iPad app that lets you read opening chapters of new books.

That year, she also met Michael Taylor — an Exeter-Harvard-Oxford man with perpetually mussed hair who runs a social media Web site, Odyl — on an ashram in upstate New York, where she had sneaked in M&M’s.