Main Page | See live article | Alphabetical index A social network consists of any group of people connected through various social familiarities ranging from casual acqaintance to close familial bonds. Social networks are often the basis of cross-cultural studies in sociology and anthropology. Internet social networks Online social networks became a fad in 2003 with the popularity of such websites as Friendster, Tribe.net and LinkedIn. See also: social contract This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.