There must be many online resources for good user interface design principles. I'd like to see an easily-browsed list, perhaps categorized by desktop vs. on-line (or maybe not; that might be too limiting).
Any examples out there?
The List (so far)
A List Apart
Designing Web Interfaces
Jakob Nielsen's useit.com
Quince
Smashing Magazine
Usability Post
Yahoo Design Pattern Library
Designing Web Interfaces
A List Apart provide articles about design and also how to make them standards compatible.
I honestly think that StackOverflow really has a well thought out UI. Access to most everything is intuitive and efficient.
I've already changed some of my own interfaces based on things I have seen here.
You might be looking for "design patterns," common ways we present and perform interactions, such as those discussed in Jenifer Tidwell's book, Designing Interfaces. Her book's site links to her original pattern library, Common Ground, as well, but the book is a good one to own.
Yahoo! has a Design Pattern Library, focused on web design patterns, and Quince was mentioned in a previous comment.
http://designingwebinterfaces.com/, the accompanying website to the homonym book has some good patterns.