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Peer Impact was the name of a pay-for-download file-sharing service created by Wurld Media, Inc. As the name suggests, it utilized a peer-to-peer distribution system similar to BitTorrent to speed downloads. To compensate users for their bandwidth, Peer Impact paid out cash-credit rewards toward future purchases. Like iTunes, songs on Peer Impact cost $0.99 each. Other media was also available, including radio, video, audio books, and video games. Peer Impact was launched by Wurld Media in August 2005 with signed digital distribution contracts with four large content providers: Sony BMG Music Entertainment, Universal Music Group, Warner Music Group, and EMI. Wurld Media is the first legally sanctioned digital distributor to sign agreements with all four of these content owners. It also had deals with NBC/Universal, 20th Century Fox, and Warner Bros. Pictures to provide video on demand content. Although Peer Impact used a peer-to-peer architecture, it maintained centralized control of verification and authorization of downloads to ensure that only legal content was exchanged within the network. This was also important to ensure that content redistributors and copyright owners were appropriately compensated. Wurld Media, Peer Impact's parent company, was acquired for 10 million dollars by the ROO Group on February 26, 2007. ==External links== *(The Saratogian: "Company aims to share and share alike" by Christopher Diakopoulos ) *(NBC Universal and Wurld Media Announce On Demand Deal for Movie and TV Event Content on Peer Impact Service ) *(Peering into the Future by Bob Cringely ) *("P2P: From Internet Scourge to Savior" ) *("ROO to Acquire Assets of Wurld Media" ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Peer Impact」の詳細全文を読む スポンサード リンク
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