even Matthew Paul Thomas didn't know anything about the reasoning behind the button change was quite surprising to me. I'm not saying he was obliged to, but a little more sharing between the design team and a guy who, you know, designs interfaces and makes usability studies for Ubuntu was expected.
As for the poll, I agree it's probably not very useful. When I decided to get rid of my taskbar and rely only on the Compiz scale plugin to switch tasks, I spent a considerable adapting. It was totally worth it, but accidental clicks were common occurences in the beggining. And yes, there's so much heat in the current situation that I expect blatant lying from voters in the hope that this poll will influence someone. I don't really blame them, but skewed is probably a weak word to describe what will happen to this poll.