Rule of Thumb
If I don't have your cell phone number or you don't have mine, don't add me to facebook.
If you are an old classmate or colleague of mine, add me to linkedin.
Facebook is private and personal and should only consist of those who are actively in your existence. I should be able to text you or facetime you and you should be able to as well.
Linkedin is for professionals and is for your career — old classmates go there.
I am not going into my old facebook except to officially deactivate it.
You will be able to find me on linkedin. Add me there.
Facebook is private and personal. Don't be adding me there if I haven't spoken to you in three decades.