Providing all the news you would ever want to need or know about traditional, digital, and social media, Mediabistro also purportedly has the largest job board for all you media maestros in the U.S. New jobs are posted on the daily, and the positions range from magazine editors and graphic designers to marketing specialists and social media managers. You can browse and filter through jobs by industry. After clicking around a bit, Mediabistro will prompt you to register as a member. Luckily, it's pretty fast, painless, and free.