Even MSN bloggers love Firefox. The beauty of it is that it works straight out of the box (so to speak) for newbies, but advanced users can tweak to their heart's content. The latter group will enjoy the free excerpt from Hacking Firefox Extensions on ExtremeTech right now. The author explains how to get older extensions to work with the latest Firefox releases and troubleshoot all sorts of problems. Good stuff. Of course, you can get more by buying the entire book.