Nobody has mentioned soylent green yet? Or perhaps a similar solution: feed the homeless to the hungry.
I'm assuming you want to automatically/programmatically discard the one with the least/most artifacts. In this case there are very few programs around, but I'm working on a rules engine for my program that may be able to help you in future. Please evaluate DuMP3 at http://dump3.sourceforge.net/ to see if it may suit your needs.
here is another silly way to kill a machine
chown -R guest:guest /
init 6
Those who can, do; those who can't, simulate.