I know it's dumb but this is my favorite idea: The user goes to MegaUpload. It says “HTTP Error 460” (this doesn’t exist—you would be making it up): “Seized by the FBI”.
Seriously, they should have an alt-text for that image. In fact, I'm quite certain that "Section 508" legally requires the FBI to have an alt-text for that image.
It's being a little nitpicky. It's not like anyone really cares about the seizure notices and how good they look.