The Top Companies lists were started in 2016 and are published annually. This change means LinkedIn is a more proactive networking site for job applicants trying to secure a career move or for salespeople wanting to generate new client leads. Since 2017, that step has been removed from the connection request process - and users are allowed to connect with up to 30,000 people. Before the 2017 new interface was launched, LinkedIn encouraged connections between people who'd already worked, studied, done business, or the like. However, there is no way of flagging anything other than positive content. Since September 2012, LinkedIn has enabled users to "endorse" each other's skills. The "gated-access approach" (where contact with any professional requires either an existing relationship, or the intervention of a contact of theirs) is intended to build trust among the service's users. For example, users can search for second-degree connections who work at a company they are interested in, and then ask a specific first-degree connection in common for an introduction. The site also enables members to make "connections" to each other in an online social network which may represent real-world professional relationships. In addition, the platform has seen a significant rise in its premium subscription model with a 85% increase from 2019 to 2023. For example, the contact tagging and filtering features are not supported anymore. The company traded its first shares on May 19, 2011, under the NYSE symbol "LNKD", at $45 (≈$62.00 in 2024) per share. LinkedIn has been subject to criticism over its design choices, such as its endorsement feature and its use of members' e-mail accounts to send spam mail. In 2007, there were 10 million users on the platform, which urged LinkedIn to open offices around the world, including India, Australia and Ireland. Users can invite other people to become connections on the platform, regardless of whether the invitees are already members of LinkedIn. The company has a diversified business model with revenue coming from Talent Solutions, Marketing Solutions, Sales Solutions and Premium Subscriptions products. Since 2010, LinkedIn has contributed several internal technologies, tools, and software products to the open source domain. By this point, LinkedIn had about 2,100 full-time employees compared to the 500 that it had in 2010. LinkedIn's fourth-quarter 2011, earnings soared because of the company's increase in success in the social media world. In late 2003, Sequoia Capital led the Series A investment in the company. The company was founded in December 2002 by Reid Hoffman and the 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, Chris Saccheri). LinkedIn filed for an initial public offering in January 2011 and traded its first shares in May, under the NYSE symbol "LNKD". Since January 2011, the company had received a total of $103 million (about $141 million in 2024) of investment. The platform has also been criticized for its poor handling of misinformation and disinformation, particularly pertaining to the COVID-19 pandemic and to the 2020 US presidential election. 94% of business-to-business marketers since 2017 use LinkedIn to distribute their content. The new version was meant to make the user experience similar across mobile and desktop. Analysts believed Microsoft saw the opportunity to integrate LinkedIn with its Office product suite to help better integrate the professional network system with its products. In June 2016, Microsoft announced that it would acquire LinkedIn for $196 a share, a total value of $26.2 billion. In May 2026, LinkedIn introduced an agency certification initiative intended to help advertisers identify firms with experience using the platform's advertising and campaign tools. From 2015, most of the company's revenue came from selling access to information about its members to recruiters and sales professionals; LinkedIn also introduced its own ad portal named LinkedIn Ads to let companies advertise in its platform. The platform is primarily used for professional networking and career development, as it allows jobseekers to post their CVs and employers to post their job listings. We regularly update our app to fix bugs, improve performance and add new features to help you connect with your professional network and advance your career. LinkedIn has discontinued native profile video, though the audio name pronunciation feature remains available. In September 2021, LinkedIn discontinued LinkedIn stories, a feature that was rolled out worldwide in October 2020. According to the company's website, LinkedIn Referrals will no longer be available after May 2018.[needs update] The feature had been launched in 2007 and allowed users to post questions to their network and allowed users to rank answers. In 2014, LinkedIn retired InMaps, a feature which allowed you to visualize your professional network. In January 2013, LinkedIn dropped support for LinkedIn Answers and cited a new 'focus on development of new and more engaging ways to share and discuss professional topics across LinkedIn' as the reason for the retirement of the feature. 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. Users can find jobs, people and business opportunities recommended by someone in one's contact network.