Very interesting article by Malwarebytes Labs (in response to the Cambridge Analytics data leaks over Facebook) about what's happening with your data on the LinkedIn network here: https://goo.gl/K3G7xg
...with regards to privacy controls, Google search indexing of new profiles, relationship weighting which increases access levels for your connections as well as profile phishing, the company's security history failures, and what happens to your data after "closing" your account.
If you have to use the platform, they recommend logging out of LinkedIn when not in use as this prevents scraping of all your network activity, and limits tracking what you do on the platform. Ad blockers and anti-tracker extensions for your browsers will also help.