It's not immediately noticeable that it really is an ad for Request Metrics, but looking at their Twitter page makes it painfully obvious that it's a sponsored

It's not immediately noticeable that it really is an ad for Request Metrics, but looking at their Twitter page makes it painfully obvious that it's a sponsored post: https://twitter.com/requestmetrics/status/1321444529015300100 https://twitter.com/requestmetrics/status/132144452901530010... Edit: actually, seems the author of this post also works for/owns trackjs.com, who owns requestmetrics. Sad to see David Walsh' blog this way, of hidden sponsored posts. Really wish people could stick to ad-free principles better these days.