Facebook
Facebook
Facebook is an online social networking service. Its name stems from the colloquial name for the book given to students at the start of the academic year by some American university administrations to help students get to know each other. Facebook was founded in February 2004 by Mark Zuckerberg with his college roommates and fellow Harvard University students Eduardo Saverin, Andrew McCollum, Dustin Moskovitz and Chris Hughes. The website'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 eventually to anyone aged 13 and over. Facebook now allows any users who declare themselves to be at least 13 years old to become registered users of the site.

Users must register before using the site, after which they may create a personal profile, add other users as friends, exchange messages, and receive automatic notifications when they update their profile. Additionally, users may join common-interest groups, organized by workplace, school or college, or other characteristics, and categorize their friends into lists such as “People from Work” or “Close Friends”. As of September 2012, Facebook has over one billion active users, of which 8.7% are fake. According to a May 2011 Consumer Reports survey, there are 7.5 million children under 13 with accounts and 5 million under 10, violating the site's terms of service. Facebook (as of 2012) has about 180 petabytes of data a year and grows by over half a petabyte every 24 hours.

Facebook Home:

Facebook Home is a user interface layer for Android-compatible smartphones that was developed by Facebook, a social networking service. Designed to be a drop-in replacement for the existing home screen (“launcher”) on an Android device, the software provides a replacement home screen that allows users to easily view and post content on Facebook along with launching apps, a replacement lock screen that displays notifications from Facebook and other apps, and an overlay which allows users to chat via Facebook messages or SMS from any app. Facebook Home was unveiled at a press event on April 4, 2013, and was released on April 12, 2013 for a limited selection of devices form HTC and Samsung Electronics – including the HTC First, a new smartphone pre-loaded with the software.
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