- -Myspace is a social networking service owned by Specific Media LLC and pop star Justin Timberlake. Myspace launched in August 2003 and is headquartered in Beverly Hills, California. In August 2011, Myspace had 33.1 million unique U.S. visitors. In July 2005, News Corporation acquired Myspace and its parent company Intermix Media for $580 million. From 2005 until early 2008, Myspace was the most visited social networking site in the world, and in June 2006 surpassed Google as the most visited website in the United States. In April 2008, Myspace was overtaken by Facebook in the number of unique worldwide visitors, and was surpassed in the number of unique U.S. visitors in May 2009.
-Facebook is a social networking service and Web site launched in February 2004, operated and privately owned by Facebook, Inc.[As of July 2011, Facebook has more than 800 million active users. Users may create a personal profile, add other users as friends, and exchange messages, including automatic notifications when they update their profile. Facebook users must register before using the site. Additionally, users may join common-interest user groups, organized by workplace, school or college, or other characteristics, and categorize their friends into lists, e.g. "People From Work", or "Really Good Friends". The name of the service stems from the colloquial name for the book given to students at the start of the academic year by university administrations in the United States to help students get to know each other. Facebook allows any users who declare themselves to be at least 13 years old to become registered users of the Web site.
Facebook was founded by Mark Zuckerberg with his college roommates and fellow computer science students Eduardo Saverin, Dustin Moskovitz and Chris Hughes. The Web site's membership was initially limited by the founders to Harvard students, but was expanded to other colleges in the Boston area, the Ivy League, and Stanford University. It gradually added support for students at various other universities before opening to high school students, and, finally, to anyone aged 13 and over. However, based on ConsumersReports.org on May 2011, there are 7.5 million children under 13 with accounts, violating the site's terms.
-Blogger is a blog-publishing service that allows private or multi-user blogs with time-stamped entries. It was created by Pyra Labs, which was bought by Google in 2003. Generally, the blogs are hosted by Google at a sub domain of blogspot.com. Up until May 1, 2010 Blogger allowed users to publish blogs on other hosts, via FTP. All such blogs had (or still have) to be moved to Google's own servers, with domains other than blogspot.com allowed via Custom URLs. In July of 2011 a news outlet announced that Google intends to change the name of the service from "Blogger" to "Google Blogs," as part of a larger plan to re-brand or retire all non-Google brands in its portfolio of products and services.
-Twitter is an online social networking and micro blogging 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. Twitter rapidly gained worldwide popularity, with 200 million users as of 2011, generating over 200 million tweets and handling over 1.6 billion search queries per day. It is sometimes described as the "SMS of the Internet."
Twitter Inc., the company that operates the service and associated website, is based in San Francisco, with additional servers and offices in San Antonio, Boston, and New York City.
-Formspring (formerly known by its full URL formspring.me) is a social website, launched in November 2009. The site allows its users to set up a profile page, follow other users and ask questions from other users. The questions and their given responses are then published on the user's profile page. It is operated by Formspring.me, Inc., a company headquartered in San Francisco.
-Tagged is a social networking site based in San Francisco, California, United States, founded in 2004 by Greg Tseng, Johann Schleier-Smith. Tagged allows members to browse the profiles of other members, play games,and share tags and virtual gifts. Tagged says it has 100 million members. As of 28 September 2011, Quantcast reports Tagged monthly unique users at 5.9 million U.S., and 18.6 million globally. Tagged has acquired the social and instant messaging client Digsby and the gaming application WeGame.
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