According to this map , the usage of Firefox worldwide (in just one day) is very significant.  Who would have thought that Iran would have more downloads than Australia, Canada, or China?

This will play an important future role in online marketing through web browser capability.  With all the custom features that can be added, its speed, and enhanced security, its a clear choice.

The "Fast Dial" start page feature shown below is a great tool and improves efficiency.

Firefox 3 screenshot

Sites included in the screen shot: Obu Interactive homepage ; iGoogle; CNN; WordPress; Pandora Radio ; Wall Street Journal (sometimes balance can come with a right-wing editorial); Wetsand.com; the FDA; Ameritrade; Calvin & Hobbes ; SEOmoz (rockstars of SEO); and lastly, a dictionary.