yes, i like to keep up to date with my family in america; it's the best way to keep in touch and it's free. facebook is beneficial for my job as we have a secret group on it where shift updates are posted, and it's just an easy way to keep staff informed since everyone is always on facebook.
as i live away from most of my family, i like to keep in touch with them through social media. i do enjoy using the phone to hear the voices of my family, but it is sometimes not possible to speak to them in person.
yes, the benefits of facebook are being able to chat with friends.
it is cheaper to use them than to ring.
facebook is immediate and helps keep in touch with a very wide range of people at once.