How DVDs get to Netflix
From the New York Times
In the San Francisco area, Netflix trucks pick up returned DVD's from post offices by 4 a.m. each weekday morning and bring them to a warehouse in a leafy Sunnyvale office park. There, workers — mainly Asian and Latino immigrants — arrive on the brightly lighted warehouse floor at 5 a.m. to begin tearing open the red envelopes and putting the discs in mechanized sorters. By 10 a.m., the workers are stuffing new envelopes to be sent out again and the discs are back at the post office the same afternoon.Via Hacking Netflix
Netflix has 39 of these warehouses around the country, one in each major metropolitan area. Because first-class mail service takes only a day within a 50-mile radius, most customers get a new movie two days after dropping one in a mailbox.