SwarmStat
SwarmStat is a system for tracking what is happening with swarms associated with specific torrents over time and displaying this information. The concept behind this project is to understand the dynamics of BitTorrent swarms. Ideally, the trends that occur from torrents in both gaining popularity, staying power and loosing popularity will come to the forefront.
Running
For development, I would suggest something along these lines (Note that run.mode=dev disables user authentication):
MAVEN_OPTS=-Xmx512m mvn -o -D run.mode=dev jetty:run
Notes
Since I've not noted this anywhere else, to run this you need a patched version of lift-mapper to get it to work. I'm in the process of getting this pushed to my own liftweb clone but for now you'll need to ask me if you'd like the patches.