Net Applications has published recent data: Firefox Share Tops 20% for November.

Ken 'Da Numerator' Kovash has the scoop: Firefox Surpassing 50% Market Share in More Regions. As usual, statistics need to be taken with a grain of salt. If there is one thing we can take for sure from all these numbers, it's that Firefox usage is growing everywhere (I can hear Mozillian cheer all over the world while chairs are flying in Redmond). Asa has a great comment on this:

The Web is a large and massive thing and it's very difficult to get it moving in a new direction. Once it gets moving in one direction, it's got a momentum that's difficult to alter. It's not impossible, it's just difficult and either extraordinary circumstances (Netscape and Microsoft) or extraordinary effort (Mozilla) are required. It's rare that any one entity has caused a major shift in velocity of the web. Mozilla, having effected a real change in that velocity with Firefox, is acting differently than the other two examples because Mozilla's mission is not to try to consolidate control and become the sole determiner of the direction for the Web, but rather to help more people and projects (and yes, even other browsers) play a much bigger part in determining where this thing goes than they've been able to in the past.

Let me simplify his last sentence, because I think it sums up pretty well what Mozilla is about:

Mozilla's mission is to help more people and projects (and yes, even other browsers) play a much bigger part in determining where this thing (the Web) goes than they've been able to in the past.

This is just it. Mozilla is about participation. It's about enabling us, users, Web developers, content producers, to decide collectively where the Web, the Internet, our online life are going.