So these "real friends" of yours would stop talking to you if you do not use their favorite communication service? I think you may need to reevaluate either your assumptions about your friends or perhaps whether or not they really are your friends.
I have friends all of the world. I am not on Facebook or any other social networking service. Yes, I talk to my friends.
I have friends all of the world. I am not on Facebook or any other social networking service. Yes, I talk to my friends.