The reason that people are messing around with Mozilla's settings and sometimes having trouble with it is that you can actually do a lot of cool stuff in Mozilla, much more than you're going to find in the defaults. On two occasions, I've browsed the list of
extensions and thought "hey that's cool!" and installed a few. I should do that again soon. One of my favorites was Nuke Image, to remove that annoying blinking green-and-red banner ad when it showed up.
IE feels like it's hardly seen anything new since the back button.
There is so much cool stuff going on with Mozilla. For some time (until I switched to firebird, and support didn't exist for a long time), I used the Mouse Gestures extension. One of the things I really liked about it was that I could [with a mouse button held down] scribble the cursor over a bunch of links, then make a gesture with the mouse and it would open all of the links I had scribbled over in new tabs in the background, This was fun for browsing forums where there were a few new posts in several different threads.
Reading forums is so much better with tabs. You open all of the threads with new posts in tabs, then click around and read them. Researching something or another with Google is the same story.