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StudiVZ, SchülerVZ and MeinVZ is a social networking platform for students (in particular for college and university students in Europe) and is based in Berlin, Germany. The name is an abbreviation of the German expression ''Studentenverzeichnis'', which means ''students' directory''. The service is largely comparable to other social networking sites. StudiVZ claims to be one of the biggest social networks in Europe, with (reportedly) over 15 million members as of September 2009 across Europe,〔(studiVZ | Über uns )〕 mostly in the German-speaking countries of Germany, Switzerland, and Austria. However, traffic to the site has entered a state of steady decline since late 2009.〔 ==History== The network was launched in October 2005, inside a flat in Berlin〔(meinvz.net ) ''About Us'' () (retrieved 14 Apr 2010)〕 by two students named Ehssan Dariani (CEO) and Dennis Bemmann〔 and was financed by founding investor Lukasz Gadowski. Since then, they have also collected an undisclosed sum of investments by Georg von Holtzbrinck Publishing Group, the Samwer brothers (founders of the ringtone vendor Jamba!), and other sources. In fall 2006, similar services were launched in France (''StudiQG''), Italy (''StudiLN''), Spain (''EstudiLN'') and Poland (''StudentIX''). In February 2007, another version called SchülerVZ was launched, this time focused on secondary school students, with a reported membership around three million users.〔 , VZ Networks claim a total userbase of over 16 million users.〔 In February 2008, another version for non-students called meinVZ was launched. In January 2007, StudiVZ was sold to one of its investors, Georg von Holtzbrinck Publishing Group, for 85 million euros. After a massive decline in usage since late 2009, Holtzbrinck attempted to sell StudiVZ, but is not able to find any potential buyer. In February 2012, the German newspaper Süddeutsche Zeitung reported that the VZ networks have experienced a decline in total page views by 80%. Hence, only 5.9 million of the 16 million members were active in October 2011. From January 2011 to February 2012 the average monthly visit time has fallen steadily within the VZ networks. In the same period the main competitor Facebook benefited from constantly rising numbers. In August 2012, Comscore counted only 591,000 unique page visitors resulting in a decrease of 76.8% as compared to the previous year. 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「StudiVZ」の詳細全文を読む スポンサード リンク
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