Thank you for implementing Page Previews for Wikipedia. It is a great idea, especially for the Wikipedia glossaries. It is fantastic studying tool. It allows users to turn glossary terms into flashcards just by hovering over the terms. You even get the illustrations!
By the way, speaking of glossaries, could you please add a link on the Main Page of Wikipedia to the Category:Wikipedia glossaries page. I think the glossaries are one of the most important features of Wikipedia but a lot of people are not aware of them. Page Previews will now allow people to start using them as flashcards as well as glossaries. So please, please, please add the link. Readers will thank you.
I absolutely love Page Previews!
Thanks!