Top 10 Form Usability Tips
1. Place form labels above text fields
2. Cluster similar types of controls
3. Use standard values to enable autofill
4. Use <select> sparingly
5. Submit buttons don't have to be "Submit" buttons
6. Use smart scripts
7. Select logical defaults, or none at all
8. For multi-page forms, give the user a progress map
An indicator not only confirms the user's location but lets them know how much of the form is left.
9. Postbacks. Please.
10. Use design to help the user