User Testing

Designing with Data
Don't Ask, Observe
Measuring Design (or: You're not Google)
Opinions vs. Data
Ruining Usability Tests
Silverback
Some Users Want Terrible User Interfaces
Steve Krug's Usability Essentials
There Are No Stupid Users, Only Stupid User Interface Designers
Usability Testing: It's not a Myth
User Testing for Games
You really, really need to do Usability Tests

UI Rules

Below The Fold
Comments: Size Does Matter
Consistency
Disabling Inactive Menu Items
Does Your Application Create Value?
Don't Block User Interaction
Don't Mess with my Mess
Flatland
Fun
Gestures
Glossy Screens
Hierarchies
How Many Tabs Do People Use? (Not Many.)
iPhone Applications and Start Screens
iPhone Preferences and Settings.app
Jon Bell on Scrolling
Mozilla Labs Tab Study Results
Nobody Reads your Dialog Boxes
Numeric Keypads
Optimizing Short Titles
Preferences Considered Harmful
Reading Devices: Scrolling vs. Pagination
Realism in UI Design
Removing Features
Spatial Thinking
Temporal User Interfaces
The Dreaded Click-Through
Touchscreen Games: Use Analog Stick Instead of D-Pad
Touchscreen Usability
Usability Tips, Brought to You by McAfee
User Experience Myths

Interesting User Interfaces

10/GUI
BumpTop for Mac
Clever Dock Improvement
Different Android Keyboards
Fennec
Firefox for Maemo Beta 5
Google Chrome OS UI Concept Video
Locus OS
Microsoft Research's Multitouch Mice
More Scrollbars
More Temporal User Interfaces: Lifestreams
New Design Patterns for the Web: The Infinite Page
Oberon
OPEN LOOK Scrollbars
OpenOffice.org Renaissance
Optimus Tactus keyboard
Orbit
Password Masking
Picasa's Scrollbars
Pressure Sensitive Keyboard
Qwerted
Radial Menus on Handheld Devices
Raskin
Retype C
Safari Reader
Scrolling through Images
SixthSense
Skinput
Spatial Searching in Curio and Safari
Street Slide
Synergy of Pen and Touch
TeuxDeux: A Temporal To-Do App
Unread Links
Virtual Keyboards: Aligning the Keyboard to your Hands
Zeta
Zune HD: Effective Use of Animations

UI Reviews

Context Menus and Sub-Menus
Creating New Documents
dotfiles vs. the invisible bit
Even More on Installing Applications
Google Wave's Scrollbars
Installing Applications on the Mac is Broken
Installing Applications on the Mac: Still Broken
iPad Springboard Breaks Spatiality
iPhone mini
iPhone OS 4.0
iPhone Settings: Square War
Keyboard Commands and Internationalization
Keyboard Text Selection
Kindle International
Kindle: Buying Books by Accident
MDIs on the Mac
Mobile Devices: Changing Screen Orientation While Walking
Modes, Quasimodes and the iPhone
More on Installing Applications
Obligatory Snow Leopard Post: Bugs, Features, and Those Things Which Are Both
On Tabs and Docking and Title Bars
Stripes: A Conceptual Operating System User Interface
Teaching Gestures
The Pitfalls of Switching
Virtual Keyboards on iPhone and Android

This and That

Auto-Correcting German and Swiss German
Click-Through in Snow Leopard's Finder
Columns on iPad-Sized Screens
Designers are not Programmers
Don Norman on Emotions and Complexity
Fixing the Kindle Leather Cover
Inventing the Lisa User Interface
Jamy Ian Swiss Talks About Empathy
Jon Bell
MacBook Pro 17" has Optional Anti-Glare Display
Magic Mouse
Max Steenbergen
Patents
Reinstating Creator Codes in Snow Leopard
Reinstating Creator Codes in Snow Leopard, Part 2
The Desktop Metaphor
The Science of Aesthetics
Towards Semantic File System Interfaces
Usability and Security
User Interaction 101
Virtual Keyboards, Real Keyboards
Weekend Links
Weekend Links
Where are Android's User Interface Guidelines?