There is no frickin way I will install every single OS with every single browser of every single version.
To check if my website is compatible with "everybody".
I know, you can't make it compatible for everybody, since there is hell-lotta crap between screen and server.
But how to check with which "combinations" does website use 100% of it's functionality to have "wide-compatibility", like DaniWeb.com does?
I also mind such old craps like msie6.0 and winnt4.0