I actually find LinkedIn very useful, and am kind of baffled by people who say they find zero value in it. I do find many of their practices annoying; it's far from perfect. And I agree with a lot in the article. But I've been working for 20 years, and having a reasonably complete way to search all of my former co-workers, and where they currently work is amazingly powerful. Whenever I am thinking of applying to a job at some company, I can spend 30 seconds looking on LinkedIn to see if I already know someone inside (which not only drastically improves my chances of getting an interview, but also can yield much more candid information about what it's like to work there). Similarly, if I need a professional contact at some company to solve a problem at work, my LinkedIn account is hugely useful.
This might be skewed by the fact that I've worked in some pretty big-name companies, so I have a large network of other people who tend to work at well-known places. But I basically view it as an automatically updating and easily searchable rolodex. And it works great for that.
This.
I also think that LinkedIn is good for references. When I get an application for an open job and want to get further background, I use two tools: LinkedIn and Google.
And when I hear about an interesting company that I may want to work for, I use two tools: LinkedIn and Google.
I recently registered a domain on GoDaddy (I know of all places) and within 12 hours had over 30 requests on LinkedIn from developers looking to sell their services to me. If anything it is a good upsell for GoDaddy by forcing your hand at WhoIs Guard.
Similarly it does seem that installing the LinkedIn app on your phone spies on who you call/contact/look at online which translates into recommendations. A few months ago I had someone give me their business card and I called them the next day to follow up. I had not entered any of their details in my contacts or emailed them prior. After the call I went to connect with them on LinkedIn and sure enough the first person in the "People You May Know" section was this person.