Good advice. I would agree with the author about one thing in particular: you don't need LinkedIn (or Facebook, etc.) to be on the web. Get a domain name and some hosting and put up your own site with your resume, accomplishments, hobbies and interests. That's yours to own and control.
This is good advice but I also wish companies like gitlab and github would support this for those of us who don't want to manage a site and have most reference work on git*.com anyway.
I really don't understand all the hate that Linkedin gets on HN.
In my opinion, Linkedin is one of the better social networks - devoid of clutter and politics since each posting is connected to your professional network/appearance.
The article seems to argue that it is all a zero sum game when in reality, with services like linkedin, you can see prospective employers you had never even thought of before. Sure I could get a job at Facebook where tons of my friends work through networking, but maybe the esoteric startup the recruiter pitched to me on linkedin turns out to be more interesting.
That is the reason I don't have a Facebook account but one on LinkedIn and Xing.
Not that I ever used those much but at least you get some value from it in being specialized.
Because you will get that weird recruiter from God nows where with some random job offer. Unlike Facebook which is just a glorified birthday reminder for people you don't even know.