I see the ones in Bob's post in Firefox 4.0.1 in Linux and in Konqueror in Linux (whose renderer is used by Safari). Oddly enough in Konqueror, I can't see the double-thumbs-up guy in Tig's sig, aka However, if I right-click on the "missing image" picture to load the image itself up in a separate tab, it comes up fine. Very peculiar. Might just be a Konqueror bug though which I wouldn't worry about unless the Safari people are also having troubles.