Facebook is a social networking website, founded in 2004. This is a list of features that can be found on the Facebook website, as well as technology features on the website.

On April 5, 2008, Facebook pre-released Facebook Chat. As of April 23, 2008, Facebook Chat was released to the entire Facebook user base. Users may chat with their Facebook friends on a one-to-one basis, or a user may chat with multiple friends simultaneously through the groups feature. Instant messaging clients that currently support Facebook Chat include Yahoo! Messenger version 11.0 and later, Skype version 5 or later, AOL Instant Messenger, eBuddy, Flock, Miranda IM, Trillian, Empathy, Pidgin, Adium, Nimbuzz, FIM (Windows Mobile / Windows Phone 7), Palringo (Windows Mobile), Meebo, Tokbox as well as QIP Infium with a Firefox plugin. Windows Live Messenger 2011 (Wave 4) can connect to Facebook as well. Facebook Chat can also be run on the desktop using Gabtastik, a dedicated web chat browser. Facebook Chat can also be run on the iPhone using Facebook Chat for iPhone app. Facebook also released the official app for iPad. Facebook chat is also available to use for Blackberry users via the Blackberry Facebook app. On May 13, 2008, a Facebook developer announced that they are working on XMPP support, allowing hundreds of instant messaging clients to interoperate with the service; this functionality became operational on February 10, 2010. In November 2010, Facebook released a major upgrade of its Messages feature, which merged Chat and E-mail into the Inbox. However, users can still only chat with friends and group members.

Greyson Michael Chance (born August 16, 1997) is an American pop rock singer and pianist whose April 2010 performance of Lady Gaga's "Paparazzi" at a sixth-grade music festival became a hit on YouTube, gaining over 45 million views as of December 3, 2011. Two of his original compositions, "Stars" and "Broken Hearts", gained over 5 and 7 million views respectively on his YouTube channel. His début single, "Waiting Outside the Lines", was released in October 2010. Chance's début album, Hold On 'Til the Night, was released on August 2, 2011.

Chance was born on August 16, 1997 in Wichita Falls, Texas, and currently resides in Edmond, Oklahoma. He is the youngest child of Scott and Lisa Chance. Chance has an eighteen-year-old sister, Alexa, and a twenty-year-old brother, Tanner, both of whom also do music. Chance began playing the piano at the age of 8 and has had three years of piano lessons. He, however, had no formal vocal training.

Of his inspiration, Chance said, "I love artists who are able to communicate their emotions through music and sing from the heart. That’s what I’m hoping to do with my songs." He was emboldened by Lady Gaga after seeing her performance of Paparazzi at the 2009 MTV Video Music Awards. He stated, "I was awestruck by her performance. I love her sense of drama and theatricality. Plus, she’s an amazing singer and piano player." Chance was also inspired by the artists Christina Aguilera, Augustana, John Legend, Elton John, and John Lennon.

Ariana Grande-Butera (born June 26, 1993) is an American actress, singer, and dancer. She made her performance debut on Broadway at age 15. Recently, she has gained attention for her role as Cat Valentine on the Nickelodeon sitcom Victorious.

Grande was born and raised in Boca Raton, Florida. She is of Italian descent, half Sicilian, half Abruzzese.

In 2008, Grande played the role of Charlotte in the musical 13 on Broadway, for which she won a National Youth Theatre Association Award. When she joined the musical, Grande left her high school, North Broward Preparatory School, but continued to be enrolled. The school sent materials to her for study with tutors. She played the role of Miriam in the first reading of the forthcoming musical Cuba Libre composed by Desmond Child. Grande teaches music and dance to children in South Africa each year as a member of Broadway in South Africa.

Grande plays the character Cat Valentine on the Nickelodeon television show Victorious, which premiered in March 2010.