"Xray is the missing link between the browser and your app code. Press cmd+shift+x (Mac) or ctrl+shift+x to reveal an overlay of what files are powering your UI – click anything to open the associated file in your editor." A lifesaver, if only for working with other people's code.

"MiniProfiler allows you to see the speed of a request conveniently on the page. It also shows the SQL queries performed and allows you to profile a specific block of code." Ooh, been looking for the latest version of something like this for a while.

Because AA uses Devise, this is pretty straightforward, but still: I found this guide hepful.

"Welcome to London,” someone in the office said today. That got a laugh. “Welcome to the managerial classes." I always enjoy MJH's blog, and especially his microfiction; this is a good one.

"Devise Async provides an easy way to configure Devise to send its emails asynchronously using your preferred queuing backend." Jolly good.

via @aanand, and because I forgot to bookmark this when I read it the first time. Good, straightforward points.

A Redis-based queueing system for ruby; much more efficient than Resque, from the looks of things, and really nice deployment configuration (ie: someone's bothered to write cap recipes and similar). Definitely going into the toolbelt, I think.

"The Bullet gem is designed to help you increase your application’s performance by reducing the number of queries it makes. It will watch your queries while you develop your application and notify you when you should add eager loading (N+1 queries), when you’re using eager loading that isn’t necessary and when you should use counter cache."

"In the golden age of BASIC, it was easy for anyone to write a program. Now we offer you this exact same capability, but this time with the advanced features of the Nintendo DSi™ system… Many programs are included to ensure that you can fully enjoy using BASIC. The included programs were also written in BASIC, so you can add new features to them in order to enhance your games. You can also take the programs and data you create and convert them to QR codes that can be shared with friends who also have Petit Computer on their Nintendo DSi systems. (Programs included: 12 feature samples,5games, a character picture tool,a background screen creation tool,a graphics tool,and a picture-drawing tool.)" Interesting – especially the music-creation stuff, as Create Digital Music proved.

"I spend every day writing Rails code in vim, and I’ve optimized the heck out that process. The screencast contains the best of what I’ve learned for creating and editing Rails code at top-speed. Come look over my shoulder and I’ll show you my best stuff." Might give this a pop at some point.

"ClickToPlugin is a lightweight and highly customizable extension that prevents Safari from launching plug-ins automatically, resulting in faster browsing, reduced fan usage, and increased battery life. It replaces every plug-in object by an unobtrusive placeholder that can be clicked to load the embedded content. Further, it can replace many plug-in-based media players by Safari’s native HTML5 media player." Installed.

Cape solves a surprisingly common problem: I have this big bunch of rake tasks; I'd like them to run on the server, which tends to mean writing cap tasks just to run the rake tasks. Cape makes it easy to just mirror them.

"Sitting quietly on my kitchen table, it has already changed my radio behaviour: instead of sticking one channel on and leaving it for hours, I surf—but intelligently, discovering things I actually want to hear. Adding pictures to the radio: but just a single, little, useful one." Nice.

"A great deal of what is called `digital art’ is not digital art at all, and it seems many digital artists seem ashamed of the digital.  In digital installation art, the screen and keyboard are literally hidden in a box somewhere, as if words were a point of shame.  The digital source code behind the work is not shown, and all digital output is only viewable by the artist or a technician for debugging purposes.  The experience of the actual work is often entirely analog, the participant moves an arm, and observes an analog movement in response, in sight, sound or motor control.  They may choose to make jerky, discontinuous movements, and get a discontinuous movement in response, but this is far from the complexity of digital language.  This kind of installation forms a hall of mirrors.  You move your arm around and look for how your movement has been contorted."

"If I were in London now or in the next few weeks, instead of Frieze I'd probably be getting to these shows." Rod's lists are always good.

I've used the Settings plugin a lot, but it's very old and dusty. This is a nice fork of it, ported to Rails 3, and saved for future reference.

"In a sense, a child, by definition, shrinks Scribblenauts’ scope. The game’s potential solutions are necessarily limited by vocabulary, so players with a smaller vocabulary have fewer options open to them. But, free of the dry, efficient logic of adulthood, a child’s imagination also opens the game up in ways beyond most adults’ reach."