It might also be interesting to see actual correlations between things. Seeing that a particular graph is 0.75 correlated is interesting, sure, but it might be more revealing that a particular graph is as correlated as, say, proportion of citizens in a country with college degrees and Nobel Prizes.
I tried to share this on facebook and it didn't let me beacause it thinks it is spam! I guess the URL is the victim of false positives in a hashing algorithm. Better than the alternative I suppose.
2016 https://news.ycombinator.com/item?id=11095840
plus a bit at https://news.ycombinator.com/item?id=11001659