> Digg was thought to have unbreakable critical mass. Nowhere near it. Digg peaked at about 40 million MAU in 2010. That's two magnitudes less than Facebook.

> Digg was thought to have unbreakable critical mass. Nowhere near it. Digg peaked at about 40 million MAU in 2010. That's two magnitudes less than Facebook. Facebook adds a Digg-equivalent to its MAU every month.