This is cross-posted from Reddit's /r/dataisbeautiful subreddit: https://www.reddit.com/r/dataisbeautiful/comments/3bzlup/goo...

I am not a fan of citing Google Trends as data visualization not because it's bad data, but because it invokes correlation-implies-causation hard and is extremely kneejerk.

On a slightly off-topic note, I made a more causal data visualization with official data on the impact of Digg v4.0 on Reddit activity: https://i.imgur.com/AdIKqFW.png