Guidelines for Accessible and Usable Web Sites: Observing Users Who Work With Screen Readers
Detailed overview of accessibility issues for web sites
Hypertext Style: Cool URIs don't change.
ColorCombos
Web Color Combinations Tool and Library
The Coolest DHTML / JavaScript Calendar [dynarch.com]
Stopdesign | CSS Organization Tip 1: Flags
The ultimate webdesign usability checklist at Not Usable
checklist for web design
Collection: Search Patterns
screenshots of various approches to search interfaces
COLOURlovers :: Color Trends + Palettes
Top 10 CSS Table Designs « Smashing Magazine
Social Login Buttons Aren’t Worth It | MailChimp Email Marketing Blog