Mozilla vs FireFox Browsers

For those who are unclear on the differences between the Mozilla package and Firefox / Thunderbird, here it is:

1. Mozilla is a complete package meaning it comes with email, browser, address book, newsgroup, and chat applications integrated.
2. FireFox is a stand-alone browser application. It doesn’t have email built-in. There is a chatzilla extension available.
3. Thunderbird is the stand-alone email application. It doesn’t have a browser built-in. The address book is included.
4. If you use Mozilla for email and click on a link within an email, it will open them in Mozilla not FireFox even when FireFox is the default browser.
5. The applications are similar, yet different. The look and feel is different.
6. Commands and features are not identical. For instance, Mozilla has F9 to open the sidebar with search, history, bookmarks, etc. whereas FireFox only opens Bookmarks and History in the sidepanel via Ctrl+B and Ctrl+H respectively. There are a few extensions to do more with this.
7. FireFox has fewer options because it doesn’t have other applications integrated with it, which can make it easier to modify.
8. Many people are using FF compared to Mozilla is due to the fact that many of them don't need the complete Mozilla suite they are just OK with FF browser.
9. The Netscape browser was first developed by the Mozilla people and is based on the same engine, but is severely bloated with commercial additions (shopping etc).

I never used Mozilla yet, for my personal use most of the time I use FireFox unless something didn't work properly I move to MS-IE. Recently while developing a web based application I noticed IE6 spawning two threads for one action, however I didn't notice this issue in FF. The hotmail webmail won't work properly in FF, here I had to use IE. Nowadays I am more inclined to FF but can't ignore IE completely though.