Add a "Report Mistake" link for every field. Visitor can report the mistake to the site admin. Admin user cal accept or ignore the reported "mistake".
- select content type in the admin page to use.
- Visitor can see a "Report Mistake" link when mouse hover the fields in the node page.
- Click the link, fill in the popup form, with the right value, and the url you reference to.
- Go to admin page with admin user, you can see the reported list.
- Accept or Ignore the report.
Used for Drupal 7.x