Following a link to the BBC I got an error page with this charming little character. What was weird is it wasn't an image, or at least not an image according to Firefox. Some html voodoo I suppose. The light gray blocks surrounding the image did not appear on the original page. I am not sure where they came from.
Just tried to look at the html. This version of Firefox (7.0.1) does not have the View Source command. And the two editors I tried (Gedit and Bluefish) both locked up while trying to edit it. Though that could be because Linux is Lovely.