Update 2013-01-07: As of PHP 5.5, access to these via URLs has been removed. Update 2012-08-06: A patch has been submitted to move all these images from URLs (which fixes the security holes) to data URIs (which probably makes the cruft worse). Net change: positive! PHP is full of cruft. For example, PHP <5.5 has a "feature" wherein if you add ?=PHPE9568F34-D428-11d2-A769-00AA001ACF42 to the URL of