Here’s what I didn’t know about “content” - Manuel Matuzović
Deepish dive into what the content property can do in CSS.
From what I've been able to see on the Net, this is the tweet that first suggested using a hash and a symbolic name to group together tweets by subject.
I can remember, back in the day, using this and an external website to then search particular tags on Twitter. Sadly I forget the name of the website.
An article exploring, in some part, the idea that science works as well as it does because failure is a feature and is (or should be) embraced.
I wish software development would do this more too.