Straight from the Mozilla wiki comes an impressive fact: 75% of users to download Firefox do not continue to use it for very long. Many issues with these numbers can come into play, but it’s still a high figure regardless. 25% is still a great number, however, although Mozilla has implemented a twelve-point plan to help trigger an increase. I personally don’t care much for IE7 because I find it a little clunky, but the fact of the matter is, it’s the default browser with Vista and it’s leaps and bounds above IE6, which is likely one of the reasons why many decide against sticking with Firefox.
Frankly, the 12-point plan doesn’t seem to offer much of real value. Nor does spending big bundles of cash on TV advertising. If you have any other ideas, they need them over at the Mozilla wiki. Every Windows user has benefitted from Firefox — even the ones who didn’t download it — because it forced Microsoft to get off its rear end, improve the product and compete for users.
Source: Guardian Blog