LinkedIn (NYSE: LNKD) is a professional social networking site. Founded in December 2002 and launched in May 2003, it is mainly used for professional networking. As of 9 February 2012, LinkedIn reports more than 150 million registered users in more than 200 countries and territories. The site is available in English, French, German, Italian, Portuguese, Spanish, Dutch, Swedish, Romanian, Russian, Turkish, Japanese, Czech and Polish. Quantcast reports LinkedIn has 21.4 million monthly unique U.S. visitors and 47.6 million globally. In June 2011, LinkedIn had 33.9 million unique visitors, up 63 percent from a year earlier and surpassing MySpace. LinkedIn filed for an initial public offering in January 2011 and traded its first shares on May 19, 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. Bhushan Kasvekar is Vice President of Products. LinkedIn is headquartered in Mountain View, California, with offices in Omaha, Chicago, New York, London and Dublin. It is funded by Sequoia Capital, Greylock, Bain Capital Ventures, Bessemer Venture Partners and the European Founders Fund. LinkedIn reached profitability in March 2006. Through January 2011, the company had received a total of $103 million of investment.
In 2003, Sequoia Capital led the Series A investment in the company. In June 2008, Sequoia Capital, Greylock Partners, and other venture capital firms purchased a 5% stake in the company for $53 million, giving the company a post-money valuation of approximately $1 billion.
In 2010, LinkedIn opened a European headquarters in Dublin, Ireland, received a $20 million investment from Tiger Global Management LLC at a valuation of approximately $2 billion, and announced its first acquisition, Mspoke, and improved its 1% premium subscription ratio.
In October 2010 Silicon Valley Insider ranked the company No. 10 on its Top 100 List of most valuable start ups. As of December 2010, the company was valued at $1.575 billion in private markets.
It was reported that LinkedIn earned $154.6 million dollars in advertising revenue alone in 2011. This number was actually higher than that of Twitter who earned $139.5 million dollars respectively.
In early January 2012, LinkedIn announced it would be expanding their offices into the Financial District of San Francisco. LinkedIn expects to move into their 57,120 square foot office space sometime in the Spring of 2012.
LinkedIn’s fourth-quarter earnings have recently soared. LinkedIn’s shares rose 9.5% to $83.68 in premarket trading. The increase in value is due to its increase in success in the social media world.
On February 24, 2012, LinkedIn announced it's acquisition of the start-up Rapportive, which created a browser plug-in that takes contact information from social networks such as Twitter and Facebook, and places them into Google's Gmail. LinkedIn has not stated yet how they will use the Rapportive's technology and talent.
In early May, LinkedIn announced it's 2012 Q1 numbers were up 101% to $188.5 million compared to $93.9 million in Q1 of 2011. Revenue for Q2 has been estimated to be between $210 to $215 million.
On May 3, 2012, LinkedIn announced it had acquired SlideShare, deemed "the YouTube of slide shows" for $119 million. It was stated that the purchase was done to give LinkedIn members a way to discover people through content. Slideshare attracts 29 million monthly visitors.
One purpose of the site is to allow registered users to maintain a list of contact details of people with whom they have some level of relationship, called Connections. Users can invite anyone (whether a site user or not) to become a connection. However, if the invitee selects "I don't know" or "Spam", this counts against the inviter. If the inviter gets too many of such responses, the account may be restricted or closed.
This list of connections can then be used in a number of ways:
A contact network is built up consisting of their direct connections, the connections of each of their connections (termed second-degree connections) and also the connections of second-degree connections (termed third-degree connections). This can be used to gain an introduction to someone a person wishes to know through a mutual contact.
Users can upload their resume or design their own profile in order to showcase work and community experiences.
It can then be used to find jobs, people and business opportunities recommended by someone in one's contact network.
Employers can list jobs and search for potential candidates.
Job seekers can review the profile of hiring managers and discover which of their existing contacts can introduce them.
Users can post their own photos and view photos of others to aid in identification.
Users can now follow different companies and can get notification about the new joining and offers available.
Users can save (i.e. bookmark) jobs which they would like to apply for.
The "gated-access approach" (where contact with any professional requires either a preexisting relationship, or the intervention of a contact of theirs) is intended to build trust among the service's users. LinkedIn participates in the EU's International Safe Harbor Privacy Principles.
The feature LinkedIn Answers, similar to Yahoo! Answers, allows users to ask questions for the community to answer. This feature is free and the main difference from the latter is that questions are potentially more business-oriented, and the identity of the people asking and answering questions is known.
Another LinkedIn feature is LinkedIn Polls. In December 2011, LinkedIn announced that they are rolling out polls to their one million groups.
In mid-2008, LinkedIn launched LinkedIn DirectAds as a form of sponsored advertising.
In October 2008, LinkedIn revealed plans to opening its social network of 30 million professionals globally as a potential sample for business-to-business research. It is testing a potential social-network revenue model-research that to some appears more promising than advertising.
Applications
In October 2008, LinkedIn enabled an "applications platform" that allows other online services to be embedded within a member's profile page. Among the initial applications were an Amazon Reading List that allows LinkedIn members to display books they are reading, a connection to Tripit, and a Six Apart, WordPress and TypePad application that allows members to display their latest blog postings within their LinkedIn profile.
In November 2010, LinkedIn allowed businesses to list products and services on company profile pages; it also permitted LinkedIn members to "recommend" products and services and write reviews.
Mobile
A mobile version of the site was launched in February 2008, which gives access to a reduced feature set over a mobile phone. The mobile service is available in six languages: Chinese, English, French, German, Japanese and Spanish.
In January 2011, LinkedIn acquired CardMunch, a mobile app maker that scans business cards and converts into contacts. LinkedIn plans to integrate this functionality into their services in the near future. In August 2011, LinkedIn revamped its mobile applications on the iPhone, Android and HTML5. Mobile page views of the application have increased roughly 400% year over year according to CEO Jeff Weiner.