One feature (in addition to security) that makes Firefox better than IE:
But my favorite aspect of Firefox is tabbed browsing, a Web-surfing revolution that is shared by all the major new browsers but is absent from IE. With tabbed browsing, you can open many Web pages at once in the same browser window. Each is accessed by a tab.
The benefits of tabbed browsing hit home when you create folders of related bookmarks. For instance, on my computer I have a folder of a dozen technology-news bookmarks and another 20 or so bookmarks pointing to political Web sites. A third folder contains 15 or so bookmarks for sites devoted to the World Champion Boston Red Sox. With one click, I can open the entire contents of these folders in tabs, in the same single window, allowing me to survey entire fields of interest.