For years I had people asking for my "facebook". I told them I didn't have one and they acted like I was insane. I am very technical, more than all of them combined and probably everyone they know.
I told them that "If I want you to be able to contact me, you already know how". They really got pissed off about that. If you don't know how to contact me already. You can go and fuck yourself. I have ZERO interest in you or anyone you know.
I always laughed when they had a look of anger like I actually had a Facebook account and just didn't want to give them access to it. "Do a search for me, and when that fails, ask anyone who knows me if I have one". When faced with that logic, they're still pissed off, which lets me know I REALLY did not need them contacting me at all.