I got the job I have now via LinkedIn. The H.R. Manager put up an ad indicating the qualities of the person they were looking for. Next step she searched for particular profiles with specific key words relating to that job and requested to follow those profiles. A few of my campus mates and I followed back and that's when I spotted her post with the job specifications and how to apply. I applied, got called for the interview and eventually got the job. Just so you know, that job was not advertised on any other platform.
My point is, just get your LinkedIn profile in order. You never know where your next job will come from. Also, it costs you nothing.