I just did. :) After I submitted it the first time, I just changed the URL so that it read http://profnano.org/test/hello.php?name=im_cheating_this_way and hit enter, and it sent that along. So the *first* person couldn't cheat,but all he'd have to do was send the URL to his buddies and they could modify it to suit.

Anyway, I just figured out how to make a hidden field print (one of those duh! moments (http://www.sfolse.net/random/aarg2.txt)), and have successfully sent myself some quiz results. w00t!