get_post_meta( $post->ID, 'foo', true ): $post->foo. get_post_meta( $post->ID, 'foo', true ): $post->foo. Scott Hanselman’s post on adding hotkeys to web applications is good food-for-thought if you have any power users, or just want a better experience when using the applications you develop.
Zach Tollman benchmarked wp_kses() and found that the conventional wisdom about its performance isn’t always true.
TED Radio Hour has a great episode about the pre-technology roots of the ideas behind today’s Open Source movement, and how they’re being applied beyond the digital realm, to things like architecture, deep-sea rovers, and even democracy itself.
I just pushed a new plugin to the WordPress.org repository that lets you quickly navigate around wp-admin using just the keyboard, similar to Dash/HUD in Ubuntu or Spotlight in OS X:
Update: Version 0.2 is out now, and it’ll also include your posts, pages, and other content types in the results.
Nacin gave a great talk at php[world] dispelling a lot of the myths about WordPress that still exist in the developer community.
Why Websites get Hacked is a good high-level article to sends to clients or friends who don’t understand why someone would want to attack their site — and therefore doesn’t see the need to protect it — or are curious about how it happens.