About two years ago, Firefox was the undisputed queen; it was smooth, sleak, and with many, many features. But then Google started dabbling in the browser world with Google Chrome, Opera released what is arguably the fastest mainstream browser in the world, and Firefox was in trouble; but with Firefox 4, that will change – or at least that’s what Mozilla says.

With more than 400 million active users, Firefox can’t afford to screw up, and they didn’t; the new design sports a lovely new interface, as well as strong support for the still-in-development HTML5 and other future web tech, already a trademark of Firefox.

For web developers, or really active users, Firefox 4 will (as always) be a welcome change, raising the bar again just as Opera and Chrome were starting to get close to it, in terms of plug-ins and add-on support. Johnathan Nightingale, director of Firefox development at Mozilla gives additional details:

“Beyond blocking the ad loads, which you can do with add-ons, this is a business-social trust situation between sites and users. We need people to vote with their feet, or at least want to have that conversation. We’ve spoken to a lot of advertisers. And by and large, they want to be good citizens here”.

Other than that, all I can say is… go and download Firefox 4.