[rsolva]

I sometimes wonder if the use of Firefox is under reported just because a lot of it's users are power users, installing extensions that spoof the user agent. I know I did for a long while, making my Firefox pretend it was Chrome on a Windows machine.

[acdha]

This is definitely the case for anything like Google or Adobe Analytics which are blocked by the default tracking protection. You can’t compare the results directly due to bots but on sites I’ve controlled our servers saw significant disparities between the server logs and the percentages commonly reported as global share.

[kzrdude]

I'm a too proud Firefox user to do that. But not all of us are fanatics like that.