Facebook is a very nice messenger which connects us with our friends and family all across the world . It is invented by mark zuckerberg . I personally feel that it is a part of our life now because we all want to be in touch with our loved ones .
It also helps us to contact with the friend of our friends . So I think its a very useful and necessary application . we can also share pictures with our friends across the world without any cost . We can chat with our friends for hours across the world free of cost . so it makes facebook very essential for us