Yes, its true facebook.com is part of my daily life even most of the people do agree. It provides bridge between two or more countries, religions, cast and human race. Allow to represent your thoughts, your opinion, happiness or pleasure like mouthshut.com do(sort-of same). This site have awesome loading capability and of-course depend on your connection.
Your all personal information is safe with them as they have multi-layer security feature and all your information encrypt and save in their giant data centers(here data flows as speed of light). From your side try to keep password change regularly not to disclose to anybody.