We’re very grateful that one of our users knocked out one of the items on our to-do list and created a Greasemonkey script for showing related articles on Wikipedia.  If you have Greasemonkey installed in Firefox you can just click on “install script” on this page.  To get related articles without being logged in to Wikipedia.

Per the comments on that page, we will start rolling out our Wikipedia demo in other languages probably about a week from now.