Ha. I actually submitted a same demo 24 hours prior to your posting: https://news.ycombinator.com/item?id=5688411. At first I was mildly irritated, thinking that someone rehashed what I cooked up, but after looking at your repo, I see that you guys have been playing around with this for a few weeks, so - hooray for simultaneous discovery! :) Anyway, I really do like the rendering you guys have going on. One other thing you can do is hit the Wikipedia API to extract out the "coordinates" property for the page that was updated and show that. Make sure to change any page titles from "Talk/<Page>" to "<Page>" to pull out more relevant changes.