I have a snapshot of data of 1 million users and here is the browser data.
and I honestly expected more Firefox 3 users out of 1 Million only 7,908 Firefox 3 users!
Internet Explorer 7.0 and Internet Explorer 6.0 are head to head which surprised me a little
Added : the site is a commercial site and informational for young working professionals, no adsense !
also added in the SEO industry the skew is much different
But if you take another example of a UK e-commerce site :