It only takes a tiny number of people to make a lot of noise, but I don't think it represents public opinion. Consider the Tea Party: Whether you agree with them or not (please don't answer), based on the noise they generate they might seem to be a majority, but they are a small and shrinking minority.
I wouldn't be so sure about that. There may be a relatively small number of very vocal individuals, but I think their opinions may be much more widely held that you believe they are. It's no secret that Firefox's share of the market has been dropping lately. For every individual who speaks out against the latest set of bad decisions from Mozilla, there are clearly many other users who share that disappointment, but say nothing, and instead just move from Firefox to some other browser. It's these silent former users who contribute to Firefox's decline in market share each month.
