A social networking service is an online platform which people use to build social networks or social relationship with other people who share similar personal or career interests, activities, backgrounds or real-life connections.
They can incorporate a range of new information and communication tools, operating on desktops and on laptops, on mobile devices such as tablet computers and smartphones. They may feature digital photo/video/sharing and diary entries online .Online community services are sometimes considered social-network services by developers and users, though in a broader sense, a social-network service usually provides an individual-centered service whereas online community services are group-centered.Defined as “websites that facilitate the building of a network of contacts in order to exchange various types of content online,” social networking sites provide a space for interaction to continue beyond in person interactions.These computer mediated interactions link members of various networks and may help to both maintain and develop new social and professional relationships
Social networking sites allow users to share ideas, digital photos and videos, posts, and to inform others about online or real-world activities and events with people in their network. While in-person social networking such as gathering in a village market to talk about events has existed since the earliest development of towns, the web enables people to connect with others who live in different locations, ranging from across a city to across the world.In other cases, members can contact anyone they have a connection to, and subsequently anyone that contact has a connection to, and so on.
The main types of social networking services contain category places , means to connect with friends , and a recommendation system linked to trust.
