Yes, I do use Firefox at work (and Safari at home), and yes, I know what a popup is. But seriously, I haven't seen one in a long time. I don't know if Firefox is blocking them, or if they just aren't around as much anymore. Perhaps the popups that Aloone-Jonez sees all the time are Windows-specific - meaning that they rely on non-standard JavaScript methods that only IE supports. Because I have literally not seen an unwanted popup yet this year.