[support] Notification of New Content

For 5.2, is there a way to notify the admins of any new content? My 'Business Listings' site allows users to create accounts and then create a listing, which will be unpublished until the admins review it. I found this: http://drupal.org/project/user_register_notify which notifies on creation of user account. Is there such a module which notifies on new content creation? Seems trivial to write anyhow, if I knew the correct hook. :) Thanks.