If it did something useful, like find me clients for the work I do then sure - I'll give them my attention. He'll, I'll pay good money for that! But I don't give a flying fuck thaty friend just graduated or a colleague got some award. I don't give a fuck and I'm sure as fuck not gonna play this game where we all pretend theirs any value in these things that email didn't accomplish 10 years ago.
I don't use it for anything other than to have my CV there and messaging with recruiters, though.
It's the digital, more obnoxious version of a kid screaming ME ME ME at the sports team draft for adults. All those bullshitters with too much time on their hands (ironically at work) begging for the attention of recruiters and prospective employers to hire them.