Twitter is an online social networking service and microblogging service that enables its users to send and read text-based posts of up to 140 characters, known as "tweets".It was created in March 2006 by Jack Dorsey and launched that July.The service rapidly gained worldwide popularity, with over 140 million active users as of 2012, generating over 340 million tweets daily and handling over 1.6 billion search queries per day. A social network is a social structure made up of a set of actors (such as individuals or organizations) and the dyadic ties between these actors.

The study of these structures uses methods of social network analysis to identify local and global patterns, locate influential entities, and examine network dynamics.

Microblogging is a broadcast medium in the form of blogging.

A microblog differs from a traditional blog in that its content is typically smaller in both actual and aggregate file size.

Microblogs "allow users to exchange small elements of content such as short sentences, individual images, or video links".

These small messages are sometimes called microposts.

In social science, a social relation or social interaction refers to a relationship between two, three or more individuals.

Social relations, derived from individual agency, form the basis of the social structure.

To this extent social relations are always the basic object of analysis for social scientists.

Fundamental inquiries into the nature of social relations are to be found in the work of the classical sociologists, for instance, in Max Weber's theory of social action.

In computer and machine-based telecommunications terminology, a character is a unit of information that roughly corresponds to a grapheme, grapheme-like unit, or symbol, such as in an alphabet or syllabary in the written form of a natural language.

Examples of characters include letters, numerical digits, and common punctuation marks (such as ". The user profile originated with the first social portal, Tsunmai CE Corp, in 1999 for its Shared Network subscribers.