The Firefox 4 Beta is now available for free download, and Mozilla’s urging people to get the word out so they can successfully field-test it. Giving feedback is easy with the Test Pilot Feedback Add-on, where you tell Mozilla whether Firefox made you feel “happy” or “sad” and why. But what exactly is Firefox 4, and why should you care?One noticeable change is the look of the browser. This is designed to make sure you don’t lose track of the many options Firefox offers. For example, tabs (the feature that allows you to have multiple pages open in one window) are now located at the top of the screen. Switching tabs is also made simpler with the addition of a toolbar option. The menu itself is cleaned up, with all options now available in the Firefox buttonsimilarly to the Microsoft Office 2007. Read the rest of this entry »