[identity profile] averysmallthing.livejournal.com 2008-03-05 04:49 am (UTC)(link)
You should obviously ban that person immediately! ;)

S/he probably thought it was a sort of commitment or something, more than a simple gauge of interest. Or infinitely more likely, s/he thought s/he chose an answer for the first one but clicked just outside of the circle. That's happened to me on LJ polls, but I know I can go back and resubmit.