I finally dug into GA? and figured out how to take it to the next level!
GA? now checks the entire HTML page to see if it contains Google Analytics code. Prior to 1.0, it only checked for analytics code within the body of a page.
GA? is a Firefox extension that automatically detects if Google Analytics is installed on a web page and displays the result in your status bar. For more details see the GA? – Is Google Analytics Installed page.
GA? is also ready for Firefox 3. 🙂