PeerIndex is a London

London

London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

-based company providing social media

Social media

The term Social Media refers to the use of web-based and mobile technologies to turn communication into an interactive dialogue. Andreas Kaplan and Michael Haenlein define social media as "a group of Internet-based applications that build on the ideological and technological foundations of Web 2.0,...

 analytics

Analytics

Analytics is the application of computer technology, operational research, and statistics to solve problems in business and industry. Analytics is carried out within an information system: while, in the past, statistics and mathematics could be studied without computers and software, analytics has...

 based on footprints from use of major social media services (currently Twitter

Twitter

Twitter is an online social networking and microblogging service that enables its users to send and read text-based posts of up to 140 characters, informally known as "tweets".Twitter was created in March 2006 by Jack Dorsey and launched that July...

, LinkedIn

LinkedIn

LinkedIn is a business-related social networking site. Founded in December 2002 and launched in May 2003, it is mainly used for professional networking. , LinkedIn reports more than 120 million registered users in more than 200 countries and territories. The site is available in English, French,...

, Facebook

Facebook

Facebook is a social networking service and website launched in February 2004, operated and privately owned by Facebook, Inc. , Facebook has more than 800 million active users. Users must register before using the site, after which they may create a personal profile, add other users as...

 and Quora

Quora

Quora is a question-and-answer website created, edited and organized by its community of users. The site was founded in June 2009, launched in private beta in December 2009, and made available to the public on June 21, 2010....

). Part of an emerging group of Social Media Analytics providers, PeerIndex helps social media contributors assess and score their influence and benefit from the social capital they have built up. PeerIndex currently tracks ca. 45 million Twitter profiles, making the company one of the leaders in its sector.

PeerIndex was founded in 2009 by Azeem Azhar, a former journalist and Reuters executive, Ditlev Schwanenflügel, a former McKinsey consultant and Bill Emmott (the former Editor-in-chief of The Economist) backed by a number of internet investors.

Methodology

PeerIndex measures influence by measuring Activity, Audience and Authority. These metrics have been chosen to maximize relevance and insight, while minimizing vulnerability to gaming, spambots and other noise.

Authority measures how relevant your activity is to the community. The Authority measure is boosted whenever others like, comment and/or engage with your activity.

Audience measures reach relative to the rest of the population, while activity measures activity compared to the rest of the population.