Firefox 3 Download Day is today. At 10am PCT (1pm EST) the Guinness World Record attempt begins. The Mozilla guys want to set a Guinness World Record for the most software downloaded in 24 hours.

With more than 15,000 improvements, Firefox 3 is faster, safer, and smarter than before and definately worth trying out. Browsers are a very personal thing. I have Firefox and IE 7 installed, but somehow still stick with using IE 7 most of the time.
I am just more used to the behavior of IE and therefore more convenient. Still, I already pledged to download Firefox 3 and I will give it a spin today.

1.6m people already pledged to download Firefox 3 today.
More details on the SpreadFirefox site.