LinkedIn (/ˌliŋkt. ˈɪn/) is a business and employment-oriented social networking service that operates via websites. Founded on December 28, 2002, and launched on May 5, 2003, it is mainly used for professional networking, including employers posting jobs and job seekers posting their CVs. As of 2015, most of the site's revenue came from selling access to information about its users to recruiters and sales professionals. As of September 2016, LinkedIn has more than 467 million accounts, out of which more than 106 million are active. LinkedIn allows users (workers and employers) to create profiles and "connections" to each other in an online social network which may represent real-world professional relationships. Users can invite anyone (whether a site user or not) to become a connection. 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. LinkedIn participated in the EU's International Safe Harbor Privacy Principles.