Time for an Upgrade - Social Media

I realized the other day that I may have to bite the bullet and rejoin the realm of social media.  I am somewhat hesitant to do it due to all the "changes" going on with privacy and things of that nature.  I am also apprehensive because of my past experiences.  The reason I am thinking of getting back into social media is because of my job search.  I noticed on a lot of company sites you can "follow" a company on twitter, "like" a company on facebook or use some other social media application to learn more.  Considering my need to quickly find a job to support me and my family, I am willing to do just about anything to help get my foot in the right company door.