IE / FF use greatly depends on the group a site is targeting. Matt Cutts recently discussed this matter on his blog, and other users are reporting the same trend: More technically proficient / web savvy users (read geeks, like myself.) tend to use Firefox in far greater numbers then IE. IE, of course, has a strong position in the less technically proficient surfers out there as it comes with Windows. A lot of people are still afraid of ‘downloading and installing things from the scary web’.

I believe word of mouth, the quite fanatic advertisement of Firefox and the direct support from Google will keep pushing it forward as surfers become more and more familiar with the internet.

Even if it wouldn’t be for the fact that Firefox is simply a better browser with, in my opinion, far better features and custom plugins, the sheer dislike for Microsoft by a lot of people out there already gives Firefox a significant advantage.