I am having 4 Internet Browsers installed in my Laptop:
1) Internet Explorer
You may wondering why I need so many browsers, let me tell you:
1) Internet Explorer is my default web browsers, built-in with Window Vista, for common use.
2) Maxthon will be my next choice if some site didn't work in IE, because the user interface of this browser is similar to IE.
3) I have to install Firefox because it support my company's webmail.
4) I installed Safari for fun, and to test this browser from MAC.
However, still I cannot login to my company intranet via VPN, may be Opera will be my next choice. :P