I track the state of the game each night so we can display a visual timeline of territory controlled by each alliance. (example: http://bit.ly/q5CFhU) I use jQuery mobile for the front end so it runs on most phones (via Phonegap) as well as modern web browsers. The server side is handled by Java Servlets and MySQL.
This started as a hobby - I'm not a developer by training - so I am very interested in feedback, suggestions, and ideas for improvements.