NK (NK.pl) is a Polish social networking service that brings students and alumni together online. Created in 2006 by 24-year-old Maciej Popowicz, a computing student in Poland’s high-tech hub of Wroclaw, NK is an abbreviation of “Nasza Klasa” which literally means
“our class”. The site has been compared to Britain’s Friends Reunited, France’s Copains d’avant, and the US’s Classmates, and Facebook. Yet NK.pl is more popular than Facebook in Poland, boasting more than 13 million active users compared to Facebook’s 6.5 million (in Poland). According to Google’s annual Zeitgeist list of commonly used Web search terms, NK was the seventh-fastest rising term in the world in 2008. The success of NK.pl has been attributed to its high-quality social networking features, online gaming offerings,and targeted advertising capabilities.