User Interface
25 excellent UX examples from ecommerce sites
The title says it all. Some great examples but some not so 'excellent' in my opinion - I'll let you make up your own minds.
Why "Simple" Websites Are Scientifically Better
A great article about the theory behind the benefits of keeping your UI simple.
Mobile Faceted Search with a Tray : New and Improved Design Pattern
Searching, and filtering, on a mobile device can be a tricky task. This article talks through the issues and solutions in detail.
Strategy
8 Psychological Triggers to Optimize Your Pricing Page
Some great guidance here for pricing pages but the principles can apply to any part of the UI that requires a decision from the user.
Product / service design
Stop pushing the web forward - QuirksBlog
An interesting take on the 'Features Vs Experience' debate. Even to a UX designer it's not always as black and white as people might expect.
Content
3 Typography Tips For A More Comfortable Read
A good starters guide for typography. Some simple rules to apply to your copy.
Relationships
Explaining graphic design to four-year-olds
Brilliant article, wasn't sure which category to put this in as it applies to so many. A must read for designers of any kind.
Careers
How to become a UX unicorn … by accident
We all know they exist in theory, I've personally never experienced one! Here's a guide to TRY and achieve that status.