Auto Clean URL for SEO removes STOP WORDS from the WordPress Slugs (URLs) in ENGLISH, SPANISH and GERMAN.
auto-clean-url-seofolder to the
/wp-content/plugins/directory (or to the directory where your WordPress plugins are located)
Please note that the plugin should not be used together with QTRANSLATE or WPML. In case you have a multi-language blog, this plugin doesn't work correctly.