WordPress Plugin
This plugin will automatically insert the AddThis widget below each post in your blog. No template changes required! PHP 5+ only. Not for blogs hosted on WordPress.com.
You can get it from WordPress.org, or follow these instructions:
Download it to your computer and unzip it
Upload it into your wp-content/plugin directory
Log into your WordPress dashboard, click on the ‘Plugins’ tab, and activate the AddThis plugin
(Optional) In Settings > AddThis, add your AddThis.com username, and customize freely
