Depends on if we have talked about stuff outside of work and have intentions to hang on. If not I'd rather not open my doors to be stalked by a co-worker... even if I've not used my IRL Facebook in about 6 years.

All my social media is exclusively for internet people. Unless you’re good friends, I don’t think that’s very appropriate.

Never ever cross breed work with social media. Period.

I am above them all. How?

If we have same interests, I like to do practical activities as well, not just talk.

Sure.

I don't post anything relating to work or hint at anything illegal so I figure I'm fine.

Sure, I don't really post anything so it's no big deal

sure why not it's such a trivial thing and it might make them feel good

gah no way, boundaries ya'll

If you don't he or she will fire your ass.

I guess I would accept, but I guess that means I can't "like" any of the shitty grad school/PI memes anymore lool

We have a rule about that at work. You can't be friends on social media if you work together. I doubt it's enforced but I wouldn't be obligated to accept their requests because of this.