I don't have LinkedIn. But I'd consider creating an account if I was to leave my current job. I'm told it's a good way to get work, though I'm sure like all other social media it's 99% full of shit.
Well if you just create brand new account with no/random connections you'd be pretty disappointed… that’s how they get ya. It’s totally fine as a sort of virtual rolodex, maybe some content marketing, mediocre as job board although all job boards seem to have turned into a total lemon market so there’s that
