"AlterEgo is a Ruby implementation of the State pattern as described by the Gang of Four. It differs from other Ruby state machine libraries in that it focuses on providing polymorphic behavior based on object state. In effect, it makes it easy to give an object different “personalities” depending on the state it is in." Oh, that could be really handy.

The Yahoo! Patterns library on Reputation; a new section, I think, and with lots of good points about game-inspired design for social software.

"Yahoo! Design Stencil Kit version 1.0 is available for OmniGraffle, Visio (XML), Adobe Illustrator (PDF and SVG), and Adobe Photoshop"

"This article explores the practice of "beeping" or "missed calling" between mobile phone users, or calling a number and hanging up before the mobile's owner can pick up the call"

Chris Messina collects a big pile of design patterns from across the web. Then he sticks them in a Flickr collection. Useful.

I've read this several times over the past year. Really is time to stick it into delicious, I feel

So, by adding a few controllers, I cut the total number of actions by almost twenty. That’s a pretty big deal, because actions are like moving parts in a machine—the more there are, the more can go wrong.

MattB on fine form - an exceptionally clear explanation of the potential design patterns of building an API into your application

First in a series on patterns in design.