Firefox 6's features are robust and generally competitive. There is some minor functionality missing in a few cases where the browser remains behind the competition, but Firefox is generally one of the most progressive major browsers available, an early adopter if not always an innovator.
Definitely a worthy heir to the Firefox name, Firefox 6's one major drawback is that, like its competitors, it uses massive amounts of RAM. Don't expect that to change as the browser is relied upon to perform more and more tasks that once occurred in other programs. It will also be less of a problem as hardware improves.
Firefox 6 faces a challenging field of competition. Some people have probably abandoned the browser for the significant speed differences between version 3.6 and Google Chrome. Others might be turned off by Mozilla's open-armed embrace of the rapid-release cycle, and the diminishing importance of version numbers. Frankly, we find that a bit silly, as it's better to get newer features and fixes as soon as they're ready, instead of waiting for a once-yearly update. Competition has forced Mozilla and others to put out better browsers in order to thrive, and we think that Firefox 6 will keep the browser competitive.
