Duncan McLoed on his FM Tech blog:
"Mozilla Firefox is already a very good browser. That’s why people who switch to it — and there are millions of them — tend not to go back to their previous browser. In fact, many Firefox users are so enamoured of the software that they rave about it interminably in online forums and on mailing lists.
But let’s face facts: there are plenty of things Firefox doesn’t do, and other things it could do better. Thankfully, the program’s developers have designed it to be highly customisable. They’ve created a plug-in engine that allows anyone to build new functionality into the browser. If Firefox in its basic form is like a house, then think of the add-ons as the furniture, artwork and appliances that make it a more pleasant place to live."
In the article he lists his choice of addons that address the things the 'Firefox doens't do'.