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Story: Firefox 'passes 20 percent market share' in Europe

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You could say that arguing about stats is a bit frustrating. But so are headlines constructed on one datum. You need to look at the whole picture and this article doesn't come close.

However, at the risk of stating the blindingly obvious:

Usage of Firefox will be greater at weekends because of people (like me) who are not allowed to use it at work but who will always use it at home. We should still be counted.

Usage will be higher in some polls where more informed users will skew the results in favour of the better product e.g. PC World and (I assume) boingboing.

Uptake of Firefox by big organisations in certain countries will expose more people to Firefox at work and lead to more overall use in that country (France, Germany, etc)

You can't compare any two survey results because they all use different methods, sample size, etc.. and you certainly can't compare Nov data from one source with Jan data from another (plain bad journalism!)

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