mainly personal preference and keeping the same routine. I don't see that much of a gain out of using it. It's interface reminds me of netscape....hmm, this has prolly changed in newer versions. Firefox does have many extensions, but i dont know how to use them. I'm not going to do the research without other outside influence. IE comes loaded out of the box and works for me. Also, i believe most developers write code with with the assumption that the user will be using IE. This is because a majority of the average users will use IE.