I made a demonstration of browsing categories by popularity. I've been enjoying it, and I've gotten some positive feedback, so I've started the long journey to try and get the feature implemented on the site. I just submitted it as a potential presentation at Wikimania. http://wikimania2013.wikimedia.org/wiki/Submissions/Browsing_categories_by_… video demonstration and Mathematica source code are here: http://en.wikipedia.org/wiki/User:Wakebrdkid/Popular_category_browsing
Let me know what you think. I also wanted to see if there was any interest in the group in getting together this spring to do an event related to plant photography to improve the articles for species native to Georgia. It could be fun to have a picnic at a botanical garden and then take some photos that are more detailed than the ones currently in the articles.