Well, davexunit did say "Firefox is the only major browser that is free software". Chromium is arguably a very minor browser.

Besides, if you would like take a tiny amount of market share from Google (thereby weakening their ability to set standards such as the W3C's "EME" DRM, which they support), you know that using Firefox is the right thing to do.

It also shows Google that you're not buying into their free/nonfree paradigm that discourages developers from making apps/extensions not approved by Google's stores.

Also, Chromium OS, as distributed by Google, is not free of surveillance mechanisms such as the omnibar. You'd first have to audit, hunt and remove these features, or trust a third party to do this job for you.

Besides, in my experience, there are fewer good FOSS extensions in Chromium, in particular anti-surveillance ones, but that depends on what extensions you want.

Chromium isn't a "minor brower", it is Chrome. Nearly all the code that does any real work is developed as part of Chromium, google just throw a few patches on top to make Chrome.

Can you checkout the code, apply their patches, and build Chrome? Can you do that with Firefox? ;)

Chromium is mostly free software, but it's sketchy enough territory that afaik no fully free GNU/Linux distribution packages it.

Chromium is packaged in Ubuntu and Debian. It's not packaged in Fedora because Chromium forked a half-dozen libraries [instead of pushing changes upstream](http://ostatic.com/blog/making-projects-easier-to-package-wh...). Of course, none of these are 'fully free' distros.