Toward Understanding Friendship in Online Social Networks

TL;DR

This paper explores the nature of online friendships, revealing sociological differences from real-world friendships, analyzing their structure, and introducing the concept of digital personality to quantify engagement.

Contribution

It provides empirical sociological analysis of online friendship structures, highlighting differences from real friendships and proposing the digital personality concept.

Findings

Online friendships follow Pareto distribution

Age influences online friendship patterns

Gender does not significantly affect online friendship structure

Abstract

All major on-line social networks, such as MySpace, Facebook, LiveJournal, and Orkut, are built around the concept of friendship. It is not uncommon for a social network participant to have over 100 friends. A natural question arises: are they all real friends of hers, or does she mean something different when she calls them "friends?" Speaking in other words, what is the relationship between off-line (real, traditional) friendship and its on-line (virtual) namesake? In this paper, we use sociological data to suggest that there is a significant difference between the concepts of virtual and real friendships. We further investigate the structure of on-line friendship and observe that it follows the Pareto (or double Pareto) distribution and is subject to age stratification but not to gender segregation. We introduce the concept of digital personality that quantifies the willingness of a social network participant to engage in virtual friendships.