Now many of you may use Internet Explorer, be it 6 or 7, or maybe even lower
But if you've ever been asked to intall updates, and have run through the list of updates, you will notice, Windows usually has Internet Explorer updates
(Now, none of this post should be taken into offence by Windows, Browsers aren't their strongest point)
Internet Explorer is full of bugs and exploits, it is also slow to render webpages and allows no customisation.
There are loads of browsers out there, Google have just released Google Chrome.
Personally I use Mozilla Firefox 3, firefox uses the Gecko Rendering Engine, and significantly increases the speed your pages load at and the accuracy of the webpage.