some fun stuff about mozilla..
I think you're right, for some things, it's not as good as ie or opera. But it does have some pluses..
- it's pretty good a dealing with popups compared to ie 6
- it's highly highly customizeable concerning actions and appearance, some people like that.
- the tabbed browsing feature is very nice if you browse a ton of web pages and you don't like clutter on your desktop (I would say that windows xp solves this with it's taskbar modifications though)
- open source - it's a group effort, everyone is working to improve it.
- p.s. it should run stylesheets fine.. at least the latest version.
So I hope that answers your question. It is very much like the mac, a good thing, but not the best thing, but the people who love it LOVE it and are very faithful to it.
If you like IE6 though, my advice would be to just stick with that.