Using Job Boards For More Than Jobs

If you are like most job seekers, you have registered your resume on the major online job boards such as Career Builder, Monster, TheLadders.com, Headhunter, etc. But are you aware of the plethora of nice information and job search tools that are available on these sites in addition to job listings?
Take CareerBuilder.com for example. The main navigation pages at Career Builder are “Home”, “Find Jobs”, “Post Resumes”, “Job Alerts”, “My Career Builder”