efficient-related-posts/efficient-related-posts.php at e1a385e562054c86c4b8975f40758679c41e1eab · OpenRange/efficient-related-posts · GitHub https://github.com/OpenRange/efficient-related-posts/blob/e1a385e562054c86c4b8975f40758679c41e1eab/efficient-related-posts.php
WordPress Plugin Development: Where are the Hooks? | Rob Barry http://www.rob-barry.com/2010/03/wordpress-plugin-development-where-are-the-hooks/
Connecting your plugin to the WordPress Database | Create My – eCommerce and Web Design Hornsby – eCommerces and Web Design Sydney http://createmy.com.au/connecting-your-plugin-to-the-wordpress-database/