Following on from this post (<a href="https://news.ycombinator.com/item?id=37094463">https://news.ycombinator.com/item?id=37094463</a>), I was intrigued to find which big sites would follow suit, so I started collating a list of them.<p>Interestingly, it's also now being included in codebases by default (like Mastodon).