I'm running Windows 7 plus Firefox on a dual monitor setup. When I try to watch Flash video (ESPN3, southparkstudios.com, YouTube, etc.) in full screen in one Firefox window plus browse the Web in another window, on my other screen, clicking on the Web browsing screen brings the Flash window out of full screen. Apparently these sites were not designed for this kind of dual monitor use. Is there any decent workaround for this?
An alternative is to use the "pop-out" feature(by which I mean clicking on the Popout link creates a new window) and then extend the window throughout the monitor. This is what I do.