Holy wow, do I love Dropbox, and now someone has put together The Ultimate Dropbox Toolkit & Guide
. It's worth reading if only for this:
If you’re worried about your computer being stolen, you can easily use Dropbox to perform silent reconnaissance in the even it is stolen. You’ll then have a greater chance of retrieving your stolen computer.
To do this you’ll need to install a keylogger and/or screenshot applications and set the applications to log the data they collect to your Dropbox directory. If your computer is stolen then you’ll be able to monitor every key they push and even collect screenshots of whatever they might be doing. This would greatly increase the chances of recovering your computer.