Drupal 6

Here's a standalone module that provides the handy customization described at AngryDonuts.com. You can see it in use on this site.

OpenSearch Plug-ins for Drupal.org, Drupal 4.7 API, Drupal 5 API, and Drupal 6 API

I've created some Drupal-specific OpenSearch plugins for Firefox (and IE7, too!). They provide Drupal.org and api.drupal.org search integration in browsers supporting the OpenSearch search plugin protocol.
They are useful when searching for Drupal API routines or other Drupal development subjects. Install them as you would any other OpenSearch plugin...

I've created a simple classified ads module for Drupal 4.7 and Drupal 5. It is now in use on a large number of Drupal-based sites.

Background

My classified module creates a new node type ('ed_classified') and associates an expiration time stamp with all nodes of that type. Borrowing from the image.module image gallery scheme, it creates and associates a custom taxonomy with the classified ads. Site administrators then need to create child taxonomy terms for each classified ad category. As with any Drupal taxonomy, ad categories may be nested to arbitrary depth.