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One more interesting advantage of using 3D printing for prosthetics is the cost effectiveness  According to Doctor Guo Zheng from the Xijing Hospital of the Fourth Military Medical University, the 3D-printed bones cost approximately half the price that traditional bone implants do.

J CREW launched an advertising campaign in September, featuring splashy print ads and a photograph of a well-dressed young man on its Web site, sitting atop a ladder. Surrounding him was an assortment of items: umbrellas, medicine balls, a retro-looking trailer, a slab of raw meat. All of those items were available for purchase. But J. Crew stood to profit only from the sale of its clothes. The other goods were merely recommended by J. Crew to its customers, with Web links to the purveyors of those goods. J. Crew saw a business opportunity in assuming the role of a sophisticated and self-assured friend, guiding customers through the infinite offerings of the Internet without pushing them to buy only its own wares. “What the world needs now is curators and filters,” said Anthony Sperduti of Partners and Spade, the New York advertising agency behind the campaign. “J. Crew is savvy enough to know that the Internet has changed our buying patterns.” J. Crew is hardly the only company trying to sell something by befriending you. The idea that social commerce — which mixes networking with online shopping — can win business has spurred companies to try to connect with customers through sites like Facebook and Twitter.