Boom! Professional Social Network LinkedIn Passes 100 Million Members

2011 has proven to be a monumental year so far for professional social network LinkedIn. The company filed its S-1 for a public offering, released a number of data-focused products and unveiled a social news reader for professionals. And today, the professional social network has hit an important milestone: 100 million users. LinkedIn, which launched in 2003, says that it is now being used in over 200 countries, with more than half of its users originating from outside the U.S. To be exact, the U.S. has 44 million LinkedIn members, and there are 56 million members outside of the U.S. Brazil is seeing the highest growth rate, with new user adoption rising 428 percent year-over-year. Mexico is also seeing major growth, with membership growing by 178 percent year-over-year.

Natassia Malthe Victoria Silvstedt Hilary Swank Whitney Port Minka Kelly