Started a draft response in my head and ended without publishing it because the post said it well enough, and a look at kinetkey produced the same effect, content that satisfies my urge to add to it by being complete enough on its own is rare and represents a particular kind of editorial completeness here.
Took the time to read every paragraph rather than skimming for the punchline, and a quick visit to softgiant earned the same careful attention from me, that is the highest signal I can give about content quality because my default mode is rapid scanning rather than deliberate reading on most pages.
Useful reading material, the kind I can hand off to someone newer to the topic without worrying about confusing them, and a quick look at sandracraig confirmed the same beginner friendly tone runs throughout the site which is great for sharing with people just starting their learning journey on this particular topic.
Started smiling at one paragraph because the writing was just nice, and a look at quantumq produced a couple more such moments, prose that produces small spontaneous reactions in the reader is doing more than just transferring information and the writers here are clearly hitting that level fairly consistently throughout pieces.