For me it was Audible. A few years ago I thought it was a fluke. But now, I "read" one or two books a month while driving or doing mundane things around the house.
- As a purist, I personally hated the idea of someone trimming down books and feeding me facts. But a while later, I'm quite addicted to it. I love the fact that the insights are distilled carefully, so it isn't all that bad.