"Networking online gives graduates access to an otherwise hidden job market. Maintaining a professional presence on LinkedIn, Twitter and facebook will give job seekers a major advantage."
The article reviews the main social tools and offers up numerous tips focused on "how" to set them up and use them on a daily basis for your job search. The main focus is on helping you find your dream job at the companies you have chosen to pursue.
Recall the hidden job market is not really hidden. You are simply getting a jump start on any "potential jobs" companies are considering by tracking and observing what is being discussed via social media to help find your dream job. By asking the right types of questions and offering up ideas you can help companies "craft" a job which matches your skills and capabilities.