I've been able to study **5 Magento shops** in the last weeks. And I've noticed a mess in module management. I've seen 2 places where the `modules/extensions` appear: - MagentoConnect page: where you can see the module name, description, version and you are able to uninstall or upgrade - `/app/etc/modules` directory: where the main `XML` of the module appear **My questions about modules:** 1) Why do I see some modules appearing in **`"etc"`** directory, but they don't appear in Magento Connect page ? 2) In that cases, how can I uninstall a module? 3) And how can I know which files are related with that module ? Thank you !