SNS Name

Year Created

Created by

Active Users

Description/Focus Areas

Facebook

2004

Mark Zuckerberg

1184 Million

(Jan. 2014)

General social networking site

Twitter

2006

Jack Dorsey

232 Million

(Jan. 2014)

Mobile social networking site, Micro-blogging

YouTube

2005

Chad Hurley, Steven Chen and Jawed Karim

1000+ Million

Video hosting/sharing site

StumbleUpon

2002

Garrett Camp and Geoff Smith

40 Million

Discovery engine, social networking

MySpace

2003

Chris DeWolfe and Tom Anderson

36 Million

(Oct. 2013)

General social networking site

LinkdIn

2002

Reid Hoffman

259 Million

Business and

Professional Networking

Google+

2011

Larry Page and Sergey Brin

300 Million

(Jan. 2014)

General social networking site

Pinterest

2010

Ben Silbermann, Paul Sciarra and Evan Sharp

20 Million

Visual discovery tool

Tumblr

2007

David Karp

230 Million

(Jan. 2014)

Social networking site, Micro-blogging

reddit

2005

Steve Guffman and Alexis Ohanian

114.9 Million

(April 2014)

Social news, social networking site

Orkut

2004

Orkut Büyükkökten

Dissolved

General social networking site