I don't think you guys understand.
If I start simply using Firefox or Mozilla, and designing pages to match my predominantly-used browser, I'm going to risk 98% of my users complaining that they're seeing strange pages.
Remember the Flash menu that 20% of my users couldn't see, primarily because they refused to download Flash or lacked the technical wizardry to click the download button? /ubbthreads/images/graemlins/smile.gif
Still, the webmaster there is using far too many pop ups.