In a very real sense, "Castle Argghhh!" exists because of 9/11. Started after the invasion of Iraq it actually waxed pretty large in blogosphere, though it has waned as the 'sphere has changed and matured and we haven't... But the war begat the blog, which became the cyber-Castle, which later became a meat-space location... and that begat version one of the Castle flag, seen flying next to the Star-Spangled Banner in the pic below. Version two, when I've run through the ones...