All web developers and theme designers struggle with the poor rendering capabilities of Microsoft’s Internet Explorer 6. In addition, users of MSIE 6 also tend to be more vulnerable to security issues. The team at http://www.savethedevelopers.com/ have undertaken a campaign to encourage browser users to upgrade to MSIE 7 or other browsers.
Why waste your time on a trival exercise like this?
This started as a personal programming project – a proof of concept. In the end, I learned a lot about programming in a WordPress environment. (And updated another’s very popular plugin to work in 2.5+)
What will visitors not using MSIE6 see?
Nothing. If they were to examine the source of the first web page they visit, they would see the <script> block.