- Mark Visited Links with a Different Color
- Close Modal Windows When Users Click Outside It
- Set Keyboard Focus to First Text Field When Form Displays
- Make Pressing the “Enter” Key Submit the Form
- Put Tool Tips on Icons to Describe Their Action
- Put a Link Back to Home Page on Blog Page
- Display Larger Images When User Clicks to Enlarge
- Allow Users to Edit What They Submit
- Don’t Use “Sign In” and “Sign Up” Together
Source & explanations: http://uxmovement.com/forms/9-small-user-experience-details-most-websites-forget