Upload & Sell: Off
Yes, in that sense you are of course right, all these polls have this problem. On the other hand, we all choose to be in this forum in the first place, so I wouldn't think that this would actually skew the results that much. It isn't like asking political questions only in certain streets.
However, what I really meant is that we have 477 votes. I am quite surprised that this many people voted, and I wonder if that isn't actually quite a high proportion of the number of people who browse the forum regularly.