Where is your line with students on social media? I will be giving lectures for the first time this semester starting in 2 weeks (online due to covid), some students already started to add me and follow me on social media (LinkedIn mainly for now). I rarely use LinkedIn, and really %99 of the people there are people I know in real, collaborated with, from college etc. It is already a messy jungle. I see sometimes an overly passionate kid who made a request and I don't mind accepting their request, but I also want to be fair to all so I don't. I recently began to enjoy Twitter and although most of my followers are professionals I sneak in personal likes, comments, tweets and I enjoy it that way, but with students following I don't know if I will be able to 'act human' (which I wouldn't mind if I were already an experienced, confident, accomplished professor (those are the best of the people) but at this time I am not comfortable with it). Do you change your name to not be found easily (I want colleagues to find me though)? Do I go private? I post during workshops/conferences (which makes most of my new connects) and often like/comment on others as well.  Do you accept their requests? Where is your line with social media?
My line:
On the first day of classes I tell the students that I don't want to be contacted by social media or by any means other than the school e-mail. The school also gives students a nice way to provide anonymized feedback, which no one has ever used so far.
If students send me friend requests on Facebook et al (which I don't really use), I delete the requests (it's happened a few times).
If students send me friend requests on LinkedIn anyway, I accept the requests after the end of the semester. (I can imagine a scenario where I might want to delete the request, but it hasn't happened yet.)
On at least 4 occasions I remember, former students messaged me via LinkedIn about recommendation letters for graduate school, advice regarding internships, etc. I don't know, maybe they don't have access to school e-mail anymore. I'm a little ambivalent, but so far nothing bad has happened.
I have no doubt that some students create class-related social media discussion groups. I also trust that if something happens that needs my attention (e.g. many people not understanding the material), they will contact me by school e-mail or make an appointment for office hours.