I did it when Microsoft bought them. Not because of it, it was just the moment when I realized that nothing good ever came out via LinkedIn.

Github and Stackoverflow supplied me with all of my decent leads and networking necessary in the past years. For the only two exceptions of people that expected me to have an account there, I told them I could send an up-to-date CV with references, if needed.

Yea, that's pretty much the only channel through which recruiters contact me. Nobody cold-calls or E-mails anymore, and I don't post my resume anywhere.