"I already use PostgreSQL for a few years, but every now and them, when I need to upgrade my local installation, I run into trouble. This is the step by step that I’ve used to upgrade my (homebrew) installation." This worked for me, and saved me a lot of time.

"Passing the salt will never be the same. We all knew it was inevitable. Passing the salt by hand just isn’t efficient enough in a world of bullet trains and pizza delivery and broadband. Luckily the condiments have come to life! They will waddle wherever you tell them to, so the next time someone wants the pepper, wind up the key, and pepper they shall have! Mercilessly marching towards them like the terminator, more of a threat to dull tastes than the human race." Not sure they're £20-good, but I do like this condiment set made of small robots.

"Here’s a complication of some common and useful time & date calculations and equations. Some, though very simple, are often misunderstood, leading to inefficient or incorrect implementations. There are many ways to solve such problems. I’ll present my favorites." These are, indeed, useful, and I've been using a few of them recently.

Castronova's paper on whether the Law of Demand, as it works in the real world, also works in the virtual.

Ryan North makes a little poem dedicated to the COALESCE function in MySQL. He's right: it's super useful.

"Local devs, running local services, but how to share with everyone in the room?" Answer: rebuild all your tools to work across Bonjour. Slightly bonkers but very cool.

"When we assembled a focus group of Xbox Live players, they immediately asked for one feature we hadn’t even considered – in-depth tracking of the groin area, for post-kill celebrations. We were proud to help them find a new revolutionary way to teabag – and believe me, these ain’t no waggle controls." Hardcasual goes for the soft targets, as usual. Ahehe.

Seriously, Harmonix' character design is just amazing, and this movie – just the _intro_ movie to Beatles Rockband – is making me care more about that band than anything in my life has. Harmonix are gods.