It's been a while since my first post on web browsers and since then, every major browser has released significant new versions.

Opera 9

     The fastest and most secure browser on the market is now even better. If that wasn't enough, it's standard features are the best (mouse gestures, bittorrent, nice tab options). There are some decent add-ons available as well.
    The downside is that it still has some compatibility issues with a few advanced sites, although that list is getting shorter all the time.

Firefox 2

    Some pretty good updates over the previous edition. Some of my favorite changes are... It spell checks everything you type. The default search (the one in the top right) uses Google suggest (try it out, it's nice). The default theme is much nicer. There are lots of other little things which I am still discovering.
    Firefox with no extensions isn't as good as Opera. But, Firefox has a ton of extensions available, which tips the scales in favor of Firefox.

Internet Explorer 7

    For the first time in 6 years, Windows' default browser got a major upgrade. It adds loads of new features and theoretically is a lot more secure, although time will tell. It also fixes many (but not all) of the display issues that make web developers like me want to commit violent crimes. All in all, it's a huge step forward. It's not as good as Firefox or Opera but it's probably 80-90% of the way there. It should be available if you run Microsoft Update, but if not...