Juju at scale – Spinning up 2,000 EC2 instances automagically using Ubuntu's cloud tools. The thought of all that raw power at your fingertips is amazing, and unthinkable for anyone outside of a major corporation just a few years ago. We live in an age of wonders.
The TTY demystified – I never cease to learn new things about the Unix stack I rely on. This history is a good lesson in how tricky and changing requirements can be managed with good engineering, but end up freezing handling for decades-obsolete hardware in code we'll likely be using for centuries to come.
Men invented the internet – We're entering a very weird time, as computing becomes a higher-status profession it feels like women are even less welcome.
Cloudian – Layering an S3 API on top of a Cassandra hosted service. Amazon's cloud service interfaces have become a de-facto standard, and other providers should adopt them. They feel like the system calls of a distributed OS.
Tigerweb – An online viewer of the latest version of the US Census's geo data. It's a great way to explore the completely free and open data on boundaries, natural features, and especially roads that the government makes available. If only it didn't rely on Silverlight!
Pete Warden's blog 