Building a Drupal web site certainly can take a bit of time, especially when you've got a large number of users, roles and permissions. It's also very frustrating when users write in to say your web site is not working properly.
The Drupal Masquerade module is an excellent tool for testing all kinds of settings within your Drupal site. The module allows you to easily switch between any other user and limit this capability to a group of users covered by a certain role. The catch, however, is to be certain you know what is happening with each role and user who has access to the powerful module.
