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Internally among them recruiters, I think they know that it is rubbish. Still, they do it to make the wrong impression with external parties who they thought may say "wow, they have a wide network." So fake.

What's more fake, instagram or linkedin? :D

I am not active on IG so I am not sure but would have said that if I haven't known about those fake connections in LinkedIn. 😄

My money is on LinkedIn :D