Automatic watchers is a Redmine plugin that automatically adds users that touch an issue as watchers of that issue.
Provides an option to enable/disable the automatic watcher adding feature without having to uninstall the plugin.
Getting the plugin
A copy of the plugin can be downloaded from GitHub.
Installation and Setup
Follow the Redmine plugin installation steps at the Redmine Wiki.
Restart your Redmine web servers (e.g. mongrel, thin, mod_rails)
Log in as an Administrator and verify the plugin is enabled at Administration / Plugins / redmine_auto_watchers.
If you need help you can contact the maintainer at github.com/rchady.