There are jobs that are not public. Group of applicants so that the public and so popular if the job or to find a case that people want instead of me. In general, not the companies, or recruitment, (1) popular company as a reason not to offer the only person in the house if you want to come. vita so, there are several. The secrets job. Is the only public information to a headhunting agency. If it is almost certain to retire, (2) If the person is now RIPUREISU issues, this may take a voice in company recruitment. Has been deemed inappropriate for the company, both internally and externally is not rare that he left confidential. (3) If the person would soon leave the current personnel, but can not be interviewed because, this is also just a rumor.