It's important for a non technical administrator to be able to diagnose server related problems in WordPress.
Adds a system information page that include all the details on your WordPress configuration.
Adds a "Flush Rewrite Rules" button to WP-Admin > Settings > Permalinks.
Enhances the eShop plugin. Tweak the look and feel. Check your settings. Assistance with problems.
Prints out your webservers php settings and WordPress environmental information. Important for posting within various WordPress support forums.