by Luis de Vasconcelos.
This is why having a Test/QA copy of your production Moodle site (on a different server) is so important. You can use that test instance to evaluate new plugins. Once your users have decided that a particular plugin is good and they want to use it then you can install it on the main production instance of Moodle. This keeps your production copy of Moodle nice and clean and it reduces the risk of some plugin that you want to evaluate breaking your production site. Testing untried and unproven plugins on your production instance of Moodle is a risky and dangerous thing!