#5 LinkedIn

This largest network of professionals in the world sure is a place to hunt for a job. As a LinkedIn member, you'll join 225 million other professionals who are sharing connections, ideas, and opportunities. So your profile is essentially your résumé, listing all your work experience and skills, and connecting you with contacts. Employers can list jobs on the site to recruit the best candidates, the listings are available for you to search, and of course, it's a great site for investigating potential employers. Some companies will let you apply with nothing more than your LinkedIn profile. If you see one of your LinkedIn connections is LinkedIn with someone at a company you're applying to, you can ask them to introduce you. LinkedIn's ability to connect you to others in your field (and beyond) makes it arguably the strongest job search weapon in your arsenal.

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