[Tina Safi blogs weekly at http://medianeedle.com/blog/. She works at Media Needle, a social media/word-of-mouth marketing agency based out of Los Angeles.]
Launched in 2003, LinkedIn is a business-related social networking site. Mainly used for professional networking, the company reported more than 100 million registered users as of March 2011. With last month’s LinkedIn stock market launch the company is more talked about than ever. While LinkedIn’s main draw is its connections feature, which allows registered users to maintain relationships with business/personal contacts, the site offers many other business-oriented features.