Glassdoor.com

Glassdoor.com is a unique job search tool.  This website is more for job research.  They allow you to search salaries, company reviews, interview process and job openings by company and location.  The postings come from current and former employees of these companies.  This can give you great insight into a company before you interview, receive a job offer or accept a job offer.  Registration is free but in return you have to post a salary or review of your current or a former employer which can be anonymous.