Job hunting on LinkedIn can happen in more ways than one. While you might use the site to actively look for jobs and make new valuable connections, opportunities might also come to you through recruiters approaching your directly for a role. That is, if they can find you. Just because you have a profile on LinkedIn doesn't necessarily mean that you are coming up in recruiters' searches. Without knowing it, you might therefore be missing out on opportunities that aren't advertised or you simply missed in your search.