Hooks into the admin/content/node list
* Uses AHAH to show node previews and node edit forms within the existing page.
* Uses AJAX to perform searches, apply filters, and retrieve the results without reloading the entire page.
* Adds filters by author and text content (using Drupal's built-in search).
* Shows how many nodes exist within a given set of filters, and allows direct navigation to any page of results.