LinkedIn /

LinkedIn (pronounced /ˌlɪŋkt.ˈɪn/) (NYSE: LNKD) is a business-related social networking site. Founded in December 2002 and launched in May 2003, it is mainly used for professional networking. As of 22 March 2011 (2011 -03-22), LinkedIn reports more than 100 million registered users, spanning more than 200 countries and territories worldwide. The site is available in English, French, German, Italian, Portuguese and Spanish. Quantcast reports Linkedin has 21.4 million monthly unique U.S. visitors and 47.6 million globally. LinkedIn filed for an initial public offering in January 2011 and traded its first shares on 19 May 2011, under the NYSE symbol "LNKD". LinkedIn's CEO is Jeff Weiner, previously a Yahoo! Inc. executive. The company was founded by Reid Hoffman and founding team members from PayPal and Socialnet.com (Allen Blue, Eric Ly, Jean-Luc Vaillant, Lee Hower, Konstantin Guericke, Stephen Beitzel, David Eves, Ian McNish, Yan Pujante, and Chris Saccheri). Founder Reid Hoffman, previously CEO of LinkedIn, is now Chairman of the Board. Dipchand Nishar is Vice President of Products.