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Snapchat is a video messaging application created by Evan Spiegel, Bobby Murphy, and Reggie Brown,〔(【引用サイトリンク】url=http://www.businesswire.com/news/home/20140909006378/en/Snapchat-Reggie-Brown-Resolve-Dispute#.VBFtqktk6w_# )〕 when they were students at Stanford University.〔(【引用サイトリンク】url=http://www.snapchat.com/# )〕 Using the application, users can take photos, record videos, add text and drawings, and send them to a controlled list of recipients. These sent photographs and videos are known as "Snaps". Users set a time limit for how long recipients can view their Snaps (as of September 2015, the range is from 1 to 10 seconds), after which Snapchat claims they will be deleted from the company's servers. According to Snapchat, In May 2015 the app's users were sending 2 billion photos and videos per day, while Snapchat Stories content was being viewed 500 million times per day. In November 2015, the number reached 6 billion of videos per day. The company has a valuation of $10–$20 billion, depending on the source. ==History== Snapchat was started by Brown and Spiegel as a project for one of Spiegel's classes at Stanford University, where Spiegel was a product design major. Beginning under the name "Picaboo," the two later brought Murphy into the project to code the application. When Spiegel floated the idea in April 2011 in front of the product design class for his final project, classmates balked at the idea of the impermanent photos.〔 Snapchat first launched in July 2011 under the name Picaboo in Spiegel's father's living room, though the application was later renamed and relaunched under the name Snapchat.〔〔(【引用サイトリンク】url=http://www.shinyshiny.tv/2011/09/how-to-send-naughty-photos-without-getting-caught.html )〕 In their first blog post, the company describes their mission: “Snapchat isn’t about capturing the traditional Kodak moment. It’s about communicating with the full range of human emotion -- not just what appears to be pretty or perfect”.〔Snapchat, "Let’s Chat" Snapchat Blog, May 9, 2012. http://blog.snapchat.com/post/22756675666/lets-chat〕 They present Snapchat as the solution to stresses caused by the longevity of personal information on social media, evidenced by “emergency detagging of Facebook photos before job interviews and photoshopping blemishes out of candid shots before they hit the internet”.〔 Early on, the Snapchat team focused on usability and technical aspects rather than branding efforts.〔 The app's mascot is called "Ghostface Chillah", a name Brown derived from Ghostface Killah of the hip hop group Wu-Tang Clan.〔 In May 2012, 25 images were being sent per second〔 and, as of November 28, 2012, users had shared over one billion photos on the Snapchat iOS app, with 20 million photos being shared per day.〔 In November 2012, Spiegel cited problems with scaling, as the userbase increased, as the reason for why Snapchat was experiencing difficulties with delivering images in real time.〔 Snapchat was released on Android on November 29, 2012.〔 Snapchat raised US$485,000 in its seed round and an undisclosed amount of bridge funding from Lightspeed Ventures.〔 In June 2013, Snapchat raised $60 million in a funding round led by venture-capital firm Institutional Venture Partners. The firm also appointed a new high-profile board member Michael Lynton of Sony's American division. Also in June 2013, Snapchat introduced Snapkidz for users under 13 years of age. Snapkidz is part of the original Snapchat application and is activated when the user provides a date of birth to verify his/her age. Snapkidz allows children to take snaps and draw on them, but they cannot send snaps to other users and can only save snaps locally on the device being used. In June 2013, Snapchat version 5.0, dubbed "Banquo", was released for iOS. The updated version introduced several speed and design enhancements, including swipe navigation, double-tap to reply, an improved friend finder, and in-app profiles. The same changes were then carried over to Android devices in July 2013. The company revealed in a blog post on October 14, 2013 that it complies with the federal Electronic Communications Privacy Act (ECPA) by handing over images not yet seen by its users to American law enforcement agencies. Snapchat director of operations Micah Schaffer explained: "Since May 2013, about a dozen of the search warrants we’ve received have resulted in us producing unopened snaps to law enforcement." Snapchat revealed in February 2013 that its users were sending 60 million messages daily, and this figure significantly increased to 400 million photo messages per day in November 2013. Then, as part of the company's May 2014 announcement of updated features—related to video chatting and text messaging—Snapchat stated that its users were sending 700 million photos and videos per day, while Snapchat Stories content was being viewed 500 million times per day. All of the data released since Snapchat's inception has been based on information collected solely by the company, while, as of May 2014, the company has refused to disclose the total number of active monthly Snapchat users. In June 2014, the company claimed that its Stories feature had surpassed Snaps, with over one billion viewed per day, which represented a doubling of the daily views tallied in April 2014. On September 9, 2014, Snapchat's owners announced that they had settled the lawsuit filed by fellow student and former friend Reggie Brown for an undisclosed amount. As part of the settlement, they credited Brown with the idea of Snapchat. Kleiner Perkins, a Silicon Valley venture capital firm, negotiated a financial agreement with Snapchat in August 2014, at a time when the company was valued at US$10 billion, with 100 million monthly active users. Prior to the amount raised with Kleiner Perkins, the company had already raised US$163 million in funding. Snapchat's first paid advertisement, in the form of a 20-second movie trailer for the horror film ''Ouija'', was shown to users on October 19, 2014. In addition to acknowledging Snapchat's need for a revenue stream, the company's blog explained: "We want to see if we can deliver an experience that’s fun and informative, the way ads used to be, before they got creepy and targeted." Emily White was a chief operating officer at Snapchat Inc. from December 2013 till March 2015. 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「Snapchat」の詳細全文を読む スポンサード リンク
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