Just two months after it announced its initial public offering, LinkedIn Corp., announced that it hit a milestone of 100 million members on its professional networking site.

Currently used in over 200 countries, LinkedIn marks that more than half of its users are outside of the U.S., with the fastest growth seen in Brazil, Mexico, India and France.

Users turn to LinkedIn to connect with other like-minded professionals, whether it is to find a job, recruit new hires or connect management to management. Within the site, users form discussion groups, business networking groups and recommend each other to other users. Gone are the days of having to carry around business cards hoping for the right networking opportunity. LinkedIn has brought the networking to the user.

LinkedIn posted an infographic in celebration of its milestone. Amongst some of the more interesting stats, LinkedIn noted that

56 percent of LinkedIn's users are outside of the United States.

LinkedIn's fastest-growing country is Brazil, with 428 percent growth year-over-year.

The height of LinkedIn activity happens during the workday, peaking at around noon. Mobile usage peaks around 8:00 p.m.

There are almost one million teachers on LinkedIn.

The company has been pushing international expansion by opening an office in Paris earlier this month, adding to its European offices in London, Amsterdam and Dublin, Ireland. The opening of the Paris office came a week after rival professional network Viadeo SA, which is based in Paris, opened an office in San Francisco to boost its U.S. presence.

Back in January, Reuters reported that LinkedIn had chosen its financial underwriters, who, according to Reuters sources, were familiar with the process. AllThingsD hit the news that LinkedIn filed an S-1, which is the first step in the IPO process. According to LinkedIn, a portion of the shares will be issued and sold by LinkedIn, and a portion will be sold by certain stockholders of LinkedIn.