Gamification is a big, big deal

Number of the day: By 2010, people had spent a combined 5.93 million hours playing World of Warcraft. See this fascinating TED Talk by Jane McGonigal: Gaming can make a better world. Game playing builds optimism and social bonds. The World of Warcraft wiki at the time was the world's second biggest wiki.

We're witnessing what amounts to no less than a mass exodus to virtual worlds and online game environments.
—economist Edward Castronova