Last Measure is a shock site created by the
GNAA, a trolling organization. It uses javascript to display shock images(goatse, meatspin, lemon party, etc), play looping audio of a man saying "HEY EVERYBODY I'M LOOKING AT
GAY PORNO!", and spawn multiple moving browser windows. Pressing ctrl, alt, or delete will cause a javascript alert popup which may intercept
task manager. It also tries to send "hey everybody I'm looking..." and a link to
last measure to everyone on your contacts list in outlook, and it sends whatever is on your clipboard to the GNAA for exploitation. The official version doesn't, but some versions of last measure contain malware.
If you ever accidentally click on a link to last measure, the key is to stay calm. If you freak out you're liable to break something or alert people surrounding you. Quickly press ctrl+alt+del and end your browser process before last measure loads completely. If you're too late for that, just turn off your computer.
There are hundreds of mirrors for last measure. The most common are anything.on.
nimp.org, replacing anything with any word or any number of subdomains, and halflife2.
zoy.org. The homepage of last measure is
lastmeasure.com(SFW), where last measure continues to be actively developed.
Last measure is released under the BSD license: it's open source and downloadable.