What this means is that Moodle users can blog in WordPress inside a walled garden environment (Moodle 2.5). At the same time, the WordPress url is accessible on the Internet. If you’re an English teacher who wants your students to write more, you might be interested in this integration. Imagine having all the world-class benefits of WordPress blogging, all inside a Moodle course page with a shared single-sign-on!

UPDATE: http://moodurian.blogspot.co.il/2015/06/seamlessly-connect-to-wordpress-from.html