Good article Jill. Thanks for sharing this with our job seekers.
One idea I suggest further is that anything you don't want a recruiter, hiring manager or boss to see about you on LinkedIn should not be put there, even if you have the ability to hide it using the Public Profile Settings. Premium licenses of LinkedIn can see into these non-visible fields.
The safest policy for all social media comes from @NCWiseman "Never do, say or engage on social media in a way you do not want to be seen, heard or perceived." This rule can protect you from lots of big problems.
Thanks for a good article Jill