After moving cities I started using the site. It helped me keep some form of contact with previous colleagues and establish some sense of legitimacy with my work history. I kind of regret not logging on earlier in my career, but I have always had some apprehension with social media and work.
I’ve been approached by recruiters, mainly. Maybe 2% have ended up with interviews or offers. The other 98% just put you through an interview that grabs your information and goals, and then you never hear from them again.
I’ve seen conglomerates list LI on applications.
My least favourite parts of the site is:
A. Random people who try to connect with you but do not offer you an introduction
B. Lurkers that check out your profile (especially in private mode) and don’t offer you an introduction
It’s useful for connections but not much else.