Actually many are - my wife's college did a lot of scheduling and event planning on Facebook because "everyone has a FB account". That's why she had to create an account.
Yep, similar situation in schools. They are using Facebook for a lot of stuff now. That, and I was doing at least three training/apprenticeship where we used Facebook so I had to have an account. It is quite unavoidable today, I dunno why people make it sound like it is.
Thanks: I don't see that in my life so was not aware of it.
Well no, she didn't have to. It just was most convenient for her.
Right, no one ever has to do anything: there’s no such thing as absolute imperative; there’s always a consequence implied in the verb. So why do we even have this word? Maybe because eliding the consequence is useful?
uh, given they were arranging things that where attendance was graded on FB she didn't have a choice. There was no convenience factor, it was literally the way things were communicated to students.