WordPress.org

Simple Installation: Install the plug-in from your WordPress console and activate.

Manual Installation is also very simple

1. Download a copy of the Twitterfools Trending Topics plugin
2. Upload twitterfools-trending-topics to the /wp-content/plugins/ directory under your WordPress installation folder
3. Activate the plugin through the 'Plugins' menu in WordPress
4. Add the trending topics to your sidebar or other area using the dashboard under Appearance -> Widgets
5. Enter a title and a cache timeout value in the widget instance. The cache time out values are in seconds.
   If omitted, results will be cached for 300 seconds (5 minutes).