13 Reasons to use Firefox (formerly Firebird) over Internet Explorer. I’ve bolded the original list and made my comments after in regular text.

1) Built-in Popup blocking. Microsoft has announced that this will be included in XP service pack 2, and enabled by default. Also there are several toolbars for IE that include popup blocking. Also Norton Antispam and other security suites now include popup blocking. AOL users have built-in popup blocking in their version of IE.
2) Built-in Download Manager There is no question that IE suffers from not having the ability to manage multiple file downloads. Those extra windows are annoying, even if they do auto-close when the download is done. Nice feature for Firefox.
3) Tab Browsing IE has a poor way of handling multiple browser windows, filling up the bottom tray and making a confusing mess that you have to try and determing what window belongs to what window out of a list. Tabbed browsing is a good alternative to this problem as well as iRider which uses a special thumbnail approach of open windows.
4) Integrated Search Engine Firefox uses Google, so I’m not sure why someone wouldn’t just go get the Google toolbar, it’s not that big of a deal, and gives extra features like showing the Page Rank (PR) score of each visited site. Not a feature worth switching over.
5) Less confusing and cluttered Options Firefox gets the nod here for anybody who has had trouble deleting temporary files.
6) Page Info PC users can right click and get a special window with information about the page. There is a bookmarklet available which allows this same functionality in IE.
7) Faster Response I’ve never benchmarked the two, but I’ll take their word for it. Some pages seem to crawl on IE.
Keeps HTML Formatting I’m not sure I agree on this one, if I am understanding correctly. I cut and paste from IE to Front Page all the time and all the HTML code is transported.
9) Security Being that IE has a 70% dominance in the browser world, there are going to be more attacks against it, so this one is a given advantage for using any other browser. The problem is that if enough people use another browser then it’s logical to assume that that browser will begin to be exploited. Malicious hackers like to make big splashes, not tiny ripples in the ocean.
10) Open Source Advantage Definite advantage, including the ability for folks to look under the hood and make sure nothing funny is going on.
11) Cleaner Interface More space for the actual browsing windows which is nice.
12) Smaller Download This will appeal to dialup users, but broadband users probably won’t care very much that Firefox is half the size of IE.
13) Right click menu to block images on webpage Again, a bonus for modem users or those who want to surf their favorite sites without ads and image free. This wouldn’t be enough to make me switch.

• XP Service Pack 2 includes IE popup blocking by default
• Review: A bit clumsy and awkward hovering with Cooliris
• 6 reasons the iRider browser is worth downloading
• 4 ways Internet Explorer could improve and steal the Firefox thunder
• New Windows Live Search says goodbye to pagination
• Google releases two new Firefox extensions and music search