He's keeping the http://www.tb-run.com/
site going , it's for TB races, You can start a race and other can join. both sites must use the API to get the trackable info
your user name on the sites had to match so it would correctly allow you to choose your TB's . Each day the tb-run site polls geocaching.com for info on the tb's in all the races , and updates the race stats, I assume it does the same for the rescue tb's Keeping track of the Tb's should be pretty easy using the API , You already have the mapping ability in project-gc, You would just need a database of rescuers so they can sign up and be able to select a area or areas they would want to watch, So when someone enters a rescue request, it would check the current location, and check for rescuers in that area, and send them a email saying theres a new tb waiting to be rescued, There would also be a global map showing all tb's with rescue requests , People can check . A rescuer or rescuer's if there more then one would acknowledge they will go look for it , in return the tb owner would get a email saying someone is going to look for their tb , when the rescuer completes the task, he either marks it successful or not , and it emails the tb owner the results , the rescuer is also encourage to log a note or a pick up of the TB depending on what happened.
Also if someone else picks up the TB, it emails the owner and the rescuer that it's been picked up and closes the rescue mission Tb rescue also provided you with a html banner you could paste into your profile to display how many tb's you rescued and link back to their site. Maybe Sascha that ran the site might share the existing code