Nobody's perfect, but when you're a job seeker there are some mistakes that could do serious damage to your job search.  If you want to stay on the good side of recruiters who can open doors to some of the best jobs available, there are some mistakes you must avoid:
1.    Sending recruiters amateur, sloppy or dishonest resumes. Resumes that deviate from the standard or are riddled with spelling and grammar mistakes will mark you as unprofessional. Dishonest resumes with fabricated work histories and fake job duties will brand untrustworthy. No recruiter will work with a dishonest, untrustworthy person.
2.    Not showing up for interviews or showing up late.  Bailing out on an interview (or showing up late) demonstrates that the job candidate is probably not dependable. You want to let your recruiter know, with your actions, that they can depend on you by showing up on time and prepared for the interview.
3.    Failing to make a recruiter aware of you true job status.  If you are currently working or have other job offers in the works you need to let your recruiter know. If you take one of the job offers after interviewing for the recruiter's position, you must immediately make the recruiter aware that you are no longer available.  This will go a long way in creating a good long-term working relationship with the recruiter.