Matt Ryan explains why the Opera, Safari, Chrome and Firefox browsers ROCK! I use Firefox 3.0.3 myslef and I'll testify that it's far and away the fastest browser I have ever used! There are truckloads and truckloads of addons for the Firefox browser! You should try this!
Google has already indicated that it plans to offer a platform for Chrome browser extensions, but now we finally have what looks like a firm date on when that will arrive. Apparently, a Google developer conference scheduled for May 27th will include a session on developing extensions for Chrome