Social networking: most popular sites

• Facebook is an online social networking service headquartered in Menlo Park, California. Its website was launched on February 4, 2004, by Mark Zuckerberg with his college roommates

• Founded: February 4, 2004, Cambridge, Massachusetts, United States• CEO: Mark Zuckerberg

• Founders: Mark Zuckerberg, Dustin Moskovitz, Eduardo Saverin,Andrew McCollum, Chris Hughes

• 900,000,000 - Estimated Unique Monthly Visitors 

• Twitter is an online social networking service that enables users to send and read short 140-character messages called "tweets". Registered users can read and post tweets, but unregistered users can only read them

• Founded: March 21, 2006, San Francisco, California, United States

• CEO: Dick Costolo

• Founders: Evan Williams, Noah Glass, Jack Dorsey, Biz Stone

• 310,000,000 - Estimated Unique Monthly Visitors

• LinkedIn is a business-oriented social networking service. Founded in December 2002 and launched on May 5, 2003, it is mainly used for professional networking. In 2006, LinkedIn increased to 20 million members. 

• CEO: Jeff Weiner• Founded: December 2002, 

Santa Monica, California, United States

• Headquarters:Mountain View, CA, 

United States of America

• Founders:ReidHoffman, KonstantinGuericke,Jean-Luc Vaillant, Allen Blue, Eric Ly

 • 255,000,000 -  Estimated  Unique 

Monthly Visitors 

Pinterest Pinterest is a web and mobile application company that offers a visual discovery, collection, sharing, and storage tool. Users create and share the collections of visual bookmarks (boards). Boards are created through a user selecting an item, page, website, etc.

Founder(s) Paul Sciarra, Evan Sharp, andBen Silbermann in March 2010; 4 years ago

CEO: Ben Silbermann250,000,000 - Estimated Unique Monthly Visitors 

Google+ (or Google Plus) is a social networking and identity service[ that is owned and operated by Google Inc. Google has described Google+ as a "social layer" that enhances many of its online properties, and that it is not simply a social networking website, but also an authorship tool that associates web-content directly with its owner/author.Larry Page :CEO120,000,000 - Estimated Unique Monthly Visitors 

• Tumblr is a microblogging platform and social networking website founded by David Karp and owned by Yahoo! Inc. The service allows users to post multimedia and other content to a short-form blog. 

• Founder: David Karp

• Founded: February 2007

• CEO: David Karp

• 110,000,000 - Estimated Unique Monthly Visitors

InstagramInstagram is an online mobile photo-sharing, video-sharing and social networking service that enables its users to take pictures and videos, and share them on a variety of social networking platforms

Instagram was created by Kevin Systrom and Mike Krieger, and launched in October 2010

Kevin Systrom (CEO, co-founder)

100,000,000 - Estimated Unique Monthly Visitors

VKontakte• VK is the largest Russian

social networking service in Europe. It is available in several languages, but particularly popular among Russian-speaking users around the world, especially in Russia, Belarus, Kazakhstan, Uzbekistan and Ukraine. 

• CEO: Boris Dobrodeyev• Founded: January 19,

2007• Founders:PavelDurov, 

Dmitry Semiryazhko, Nikolay Durov

• 80,000,000 - Estimated Unique Monthly Visitors

Flickr Flickr (pronounced "flicker") is an image hosting and video hosting website, and web services suite that was created by Ludicorp in 2004

anacquired by Yahoo in 2005.Flickr was launched in February 2004 by Ludicorp, a Vancouver-based company founded byStewartButterfield

 and Caterina Fake. CEO: Marissa Mayer65,000,000 -  Estimated  Unique Monthly Visitors

Vine Vine is a short-form video sharing service. Founded in June 2012, it was acquired by microblogging website Twitter in October 2012, just prior to its official launch. The service allows users to record and edit five to six-second long looping video clips, and to "revine", or share others' posts with followers• Vine was founded by Dom

Hofmann, Rus Yusupov, and Colin Kroll in June 2012. The company was acquired by Twitter in October 2012 for a reported $30 million

• Nam Mokwunye, PublicVine’s CEO

• 42,000,000 - Estimated Unique Monthly Visitors

Meetup

Meetup is an online social networking portal that facilitates offline group meetings in various localities around the world. Meetup allows members to find and join groups unified by a common interest, such as politics, books, games, movies, health, pets, careers or hobbie

CEO : Scott Heiferman 

40,000,000 - Estimated Unique Monthly Visitors

Tagged Inc.• Tagged is a social discovery

website based in San Francisco, California, founded in 2004.

• It allows members to browse the profiles of other members, play games, and share tags and virtual gifts. Tagged claims it has 300 million members. 

Founders: Johann Schleier-Smith, Greg Tseng

• Tagged CEO : Greg Tseng

• 38,000,000 - Estimated Unique Monthly Visitors

Ask.fmAsk.fm is a social networking site where users can invite questions from other users on the site or from anonymous users. The site was launched on June 16, 2010. It is ownedbyAsk.com.Foundedin Latvia in 2010 as a rival to FormspringIlja Terebin, Co-founder and CEO of Ask.fm37,000,000 - Estimated Unique Monthly Visitors

Quepasa Corporation

• Quepasa Corporation is a US-based social media technology company catering to Latin Audiences worldwide. 

• Founder:Jeffrey Peterson• Founded:June 1997, • Phoenix, Arizona, United

States•  CEO: Geoff Cook• 15,500,000 -  Estimated  Unique 

Monthly Visitors 

Classmates.com• Classmates.com is a 

social networking service created in 1995by Randy Conrads who founded Classmates Online, Inc.

• The social media website was originally designed to assist members in finding friends and classmates from kindergarten, primary school, high school, college, work and the United States military.

• CEO: Mark Goldston• 15,000,000 - Estimated Unique

Monthly Visitors

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