Are you addicted to gaming achievements? Then you may want to skip reading this slide. And also plug your ears any time someone mentions the words "media achievements."
They're exactly what they sound like: achievements that are unlocked for things that aren't video games. For example, there might be achievements for Netflix or Hulu that unlock when you watch ten movies in a single weekend, or when you start a new TV series.
These media achievements won't affect your gamerscore, which remains just for game achievements. But they will affect your addictive personality.