Facebook:

It is an online social networking service.His main office is in Men-lo Park, California.The Owner of FACEBOOK is Mark Zuckerberg and some of his Class fellows.
The Facebook is a Page to celebrates how our friends inspire us, support us, and help us discover the world when we connect.
Basically it gives people the power to share and make the world more open and connected. Mostly people use Facebook to stay connected with friends and family, to discover what’s going on in the world, and to share their feelings and express what matters to them.