Ask HN: What are some cool blogs that you follow?

Subscribing to the RSS feeds of blogs that are in my domain of interest and having new posts delivered to my feed reader is a really nice thing to wake up to. Here's my list:

  https://hackerfactor.com/blog/
  https://mitxela.com/rants
  https://fabiensanglard.net/
  https://www.schneier.com/

I'm curious as to what most of the HN crowd reads when it comes to blogs.