What is Facebook and History

Dear Friends all are just only registering and accessing feautures of Facebook but anyone known about history of facebook. I explain about facebook in brief.

What is Facebook ?

Facebook is a social networking site.

What is the use of Facebook ?

Here share all information about anything example photos, videos, Documents, in websites etc… what you have with your friends in online

Which is totally free

Who is the founder of Facebook .About him ?

Mr. Mark Zuckerberg . He is an American computer and internet entrepreneur studied at Harward university at Boston. Website developed with the help of Eduardo Saverin,Andrew McCollum, Dustin Moskovitz and Chris Hughes.

When Facebook started ?

launched in February 2004

Now a days Mobile having person surely using facebook account facebook is accessed by facebook application  For Mobile  Facebook application download from m.facebook.com

Facebook 1 billon users as on October 2012. Facebook written in C++ and PHP

Facebook has developer tools for website owners for sharing activities developers.facebook.com

Currently also running Facebook facebook website http://www.facebook.com

Usernames

On June 13, 2009, Facebook introduced a "Usernames" feature, whereby pages can be linked with simpler URLs such as http://www.facebook.com/facebookinstead of http://www.facebook.com/profile.php?id=123456789Many new smartphones offer access to Facebook services through either their Web browsers or applications. An official Facebook application is available for the operating systems Android, iOS, and webOS. Nokia and Research In Motion both provide Facebook applications for their own mobile devices. More than 425 million active users access Facebook through mobile devices across 200 mobile operators in 60 countries.

Messaging

A new Messaging platform, codenamed "Project Titan", was launched on November 15, 2010. Described as a "Gmail killer" by some publications, the system allows users to directly communicate with each other via Facebook using several different methods (including a special email address, text messaging, or through the Facebook website or mobile app)—no matter what method is used to deliver a message, they are contained within single threads in a unified inbox. As with other Facebook features, users can adjust from whom they can receive messages from—including just friends, friends of friends, or from anyone.
Aside from the Facebook website, Messages can also be accessed through the site's mobile apps, or a dedicated Facebook Messenger app,

Voice Calls

Since April 2011 Facebook users have had the ability to make live voice calls via Facebook Chat, allowing users to chat with others from all over the world. This feature, which is provided free through T-Mobile's new Bobsled service, lets the user add voice to the current Facebook Chat as well as leave voice messages on Facebook.

Video Calling

On July 6, 2011, Facebook launched its video calling services using Skype as its technology partner. It allows one to one calling using a Skype Rest API.

Following

On September 14, 2011, Facebook added the ability for users to provide a "Subscribe" button on their page, which allows users to subscribe to public postings by the user without needing to add them as a friend.In conjunction, Facebook also introduced a system in February 2012 to verify the identity of certain accounts. Unlike a similar system used by Twitter, verified accounts do not display a special verification badge, but are given a higher priority in a user's "Subscription Suggestions".
In December 2012, Facebook announced that due to user confusion surrounding its function, the Subscribe button would be re-labeled as a "Follow" button, harmonizing its branding with other social networks that use the "follow" terminology for subscribing to a user's postings.