Just noticed that Qwiki has moved to Stanford, dragging with it the page on quantum arithmetic. (As long as we're talking moving arithmetic pages, mine moved last year, too.)
As a Caltech alum, it saddens me that Hideo has moved. Ah, well, Pasadena's loss, Palo Alto's gain. As long as good research keeps rolling out of his lab, his team's making the world a better place. Good luck, Hideo.