Yes, it's a lotlike the TimeMachinefeature built into theAppleOS X software. Butwhereasthat'sfordata found on yourdesktop, thisis for data found on a serverelsewhere.
One possible reason: Apple recently sued a former contract employee, alleging that in August of 2002 he sent photos of what was at the time an unannounced Applemachine to a rumor Web site.