Spotify Wrapped, the music service's personalized year-in-review playlist, has grown so popular that all manner of consumer services are now trying a similar approach, from GrubHub to Nintendo to dating services.
Why it matters: Whether presented in aggregate, individually, or both, these year-end wrap-ups are a powerful way to present usage data back to users. The trick for the service provider is to offer fun and findings without creeping people out.
