Many thanks for the great Plugin! I searched for a while to find a related post plugin which works on a multilingual site and fetches related articles in each language correctly. This one does it perfectly. I'm so pleased.
Should somebody be interested to know: For the management of the multilingual content I'm using WPML Multilingual CMS. It's also a very recommendable and reliable WordPress plugin.
If you would like to see both plugins working: Soccerwidow
Thank you again and I will shortly write a proper review.