And now that I have a new job the recruiters are contacting me more often than before I flipped that switch even though I flipped it back off again.
But while I wouldn't say I'm active on LinkedIn, really, I do have basically the equivalent of my resume on there. Maybe if you're really wanting something you might want to consider at least putting some bullet points of what you've done for each job then flip that switch and say you're open to new work.
I honestly couldn't keep up with all of the recruiters contacting me and let a few of those slip. I did get to final stages with five companies though and got two offers.
That being said, I didn't get any offers from recruiters I met from LinkedIn (I'm sure I would eventually, three got close). The two I got offers from was a company where someone I knew referred me, and a company that contacted me on Hired.com when I went through the process there. That one was kind of nice because you can post salary expectations before anyone contacts you and I put something about 20% higher than the top of the ranges I was getting told by recruiters reaching out on LinkedIn, and I ended up getting offered that much as well.
I'm a senior engineer who had a .net job at a large but not super well-known corporation for 6 years before my current role, and about 8 years of other experience predating that.