This is interesting in the context of https://news.ycombinator.com/item?id=6712717 https://news.ycombinator.com/item?id=6712717 "Why are Amazon, Facebook and Ya

This is interesting in the context of https://news.ycombinator.com/item?id=6712717 https://news.ycombinator.com/item?id=6712717 "Why are Amazon, Facebook and Yahoo copying Microsoft's stack ranking system?" - the feature copying usually goes the other way.