It appears as if a unique cookie stored allows the survey computer to determine if you have voted already or not. Microsoft Internet Exploder (Explorer) parses this correctly. Firefox and Opera appear to not handle this in a way that the survey computer expects and it looks like you can vote over and over. Just an observation, but you are welcome to confirm this
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Thanks to all who have been voting for George.
"George in '09"
(the Italian Greyhound, not Bush)