This application was sparked by an Ars OpenForum thread about what would happen if one of us were to shuffle off to that Great Motherboard in the Sky. Software which would act as a proverbial "Dead Man's Switch" came up, which is basically a system that, if not reset by a given time, will automatically carry out a series of tasks, such as posting messages to websites like Ars, sending e-mails to loved ones (or hated ones), and encrypting or destroying sensitive files (*cough* pr0n *cough*). Interest was expressed for the creation of such software, and well, here it is.
Mac OS X does get less security problems than any other OS..perhaps apart from BeOS, but I think we can guess why BeOS doesn't get holes found ;)
There's software out there to do any task you like if not deactivated in a certain time period. I think it's on arsware.org, or google.