One advantage of being several thousand miles from home is that you have the chance to sit down and work on things that you're normally too distracted to deal with.
As such, out here I've had the chance to work a bit more on Missing. I've re-written the http client stack I was using to use HttpClient 4.x instead of 3.x, with better abstraction and a multithread-but-threadsafe client. I've also gotten the LocationManager code working and the phone now supports a location update round trip. The server component needed a few tweaks to make this work but the majority of my time has been spent working on the Android client.
I became more enthused about this when jgib pointed me at sf0.org where they're running with the whole play-a-game-but-in-real-life-and-get-levels-and-stuff.