Usability

Links

 * Innovative Techniques To Simplify Sign-Ups and Log-Ins
 * 20 Great Sign Up Form Examples to Learn From
 * The Usability of Passwords
 * The Usability of Passwords - FAQ
 * Lazy Registration UI Pattern
 * Account Registration UI Pattern
 * 12 excellent examples of lazy registration
 * Login form screenshots on UI-Patterns.com
 * Chris Messina's UI image collections
 * Chris Messina's collection of login form screenshots