I have had a few people, and reporters ask me what browser is used most to hit my site? Well believe it or not, Internet Explorer outnumbered Firefox by almost 10%. This really surprises me because I thought more savvy people came to my site for information, but I guess thats not true. Also I guess its worth mentioning that 92.55% are IE6, and 5.41% were IE7. As for Firefox 22.71% were version 1.5.0.1, 10.76% version 1.0.7 and 4.27% were version 2.0.
Below are stats for the entire year of 2006.

Below are stats for December of 2006. As you can see, IE and Firefox are almost at 50/50.

So if you are using Internet Explorer, or any other browser I would suggest you install Firefox not only for security reasons but for an overall better Internet experience! These stats were taken from Google Analytics.